Practice Assessment - Number & Alphabet Series

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| By Nchaudhuri31
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Nchaudhuri31
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Quizzes Created: 19 | Total Attempts: 9,947
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1) 35 , 30 , 25 , 20 , 15 , 10 , ?

Explanation

The given sequence is a decreasing sequence where each number is subtracted by 5 to obtain the next number. Starting from 35, subtracting 5 gives 30, then 25, and so on. Therefore, the next number in the sequence would be 5, obtained by subtracting 5 from 10.

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About This Quiz
Arithmetic Sequences Quizzes & Trivia

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This Assessment consists of questions to test your understanding on - Number & Alphabet Series
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2) 1 , 1 , 2 , 4 , 3 , 9 , 4 , 16 , 5 , 25 , 6 , ?

Explanation

The pattern in the given sequence is that every odd-numbered term is the position of the number squared, while every even-numbered term is the square of the position. For example, the first term is 1, which is 1 squared, and the second term is 1, which is the square of the position. Following this pattern, the missing term should be the square of the position, which is 6 squared, equaling 36.

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3) 2, 4 , 8 , 3 , 6 , 18 , 4 , 5 , 20 , 7 , 8 , 56 , 9 , 8 , ?

Explanation

The pattern in the sequence is that every third number is the product of the previous two numbers. The sequence starts with 2 and 4, so the third number is 2*4 = 8. Then, the next two numbers are 3 and 6, so the third number is 3*6 = 18. This pattern continues, so the missing number should be 8*56 = 72.

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4) 3 , 6 , 5 , 20 , 7 , 42 , 9 , ?

Explanation

The pattern in the given series is that the even-numbered terms are obtained by multiplying the previous term by 2, while the odd-numbered terms are obtained by multiplying the previous term by 7. Following this pattern, the next term can be found by multiplying the previous term (9) by 2, resulting in 18. Therefore, the missing term in the series is 18.

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5) 1 , 4 , 9 , 16 , 25 , ?

Explanation

The given sequence is a series of perfect squares: 1^2 = 1, 2^2 = 4, 3^2 = 9, 4^2 = 16, 5^2 = 25. Therefore, the next number in the sequence should be 6^2 = 36.

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6) 5 , 9 , 15 , 23 , 33 , 45 , 59 , ?

Explanation

The given sequence follows a pattern where each number is obtained by adding consecutive odd numbers starting from 1.
5 + 1 = 6
9 + 3 = 12
15 + 5 = 20
23 + 7 = 30
33 + 9 = 42
45 + 11 = 56
59 + 13 = 72
Therefore, the next number in the sequence would be 72 + 15 = 87. However, this number is not one of the options provided. Therefore, the correct answer is not available.

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7) 27 , 24 , 20 , 15 , 9 , ?

Explanation

The given series follows a pattern of subtracting consecutive decreasing numbers. Starting with 27, we subtract 3 to get 24, then subtract 4 to get 20, then subtract 5 to get 15, then subtract 6 to get 9. Following this pattern, the next number in the series would be obtained by subtracting 7 from 9, resulting in 2. Therefore, the missing number in the series is 2.

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8) 6 , 14 , 26 , 42 , 62 , 86 , ?

Explanation

The given sequence follows a pattern where each number is obtained by adding the next odd number to the previous number. Starting with 6, we add 1 to get 7, then add 3 to get 10, then add 5 to get 15, and so on. Therefore, the missing number in the sequence would be obtained by adding 9 to the last number, which is 86. Thus, 86 + 9 = 95. However, none of the given options match this result. Therefore, the correct answer cannot be determined based on the given sequence.

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9) 5 , 18 , 7 , 21 , 9 , 24 , 11 , 27 , 13 , 30 , 15 , ?

Explanation

The pattern in the given sequence is that every alternate number is obtained by adding 13 to the previous number. Starting with 5, we add 13 to get 18, then subtract 11 to get 7, add 13 to get 21, and so on. Therefore, the next number in the sequence would be obtained by adding 13 to 15, resulting in 28. However, this option is not available, so the closest option is 33.

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10) In the following series the next term is : CLQ , FJO , IHM , LFK , ?

Explanation

In the given series, each term is formed by shifting each letter of the previous term three positions to the right in the alphabetical order. Therefore, starting from "CLQ", we shift each letter three positions to the right to get "FJO". Continuing this pattern, we get "IHM", "LFK", and the next term would be "ODI".

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11) 64 , 32 , 92 , 46 , 102 , 51 , 122 , 61 , 148 , ?

Explanation

The pattern in the given series is that each number is obtained by multiplying the previous number by 0.5 and then adding the next odd number. For example, 64 * 0.5 + 1 = 32, 32 * 0.5 + 3 = 16 + 3 = 19, 92 * 0.5 + 5 = 46, and so on. Applying this pattern to the last number in the series, 148 * 0.5 + 7 = 74. Therefore, the missing number in the series is 74.

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12) 21 , 25 , 33 , 49 , 81 , ?

Explanation

The sequence appears to be increasing in a pattern where each number is obtained by multiplying the previous number by a prime number and then adding the square of that prime number. The prime numbers used are 2, 3, 5, 7, and 11. Therefore, to find the missing number, we can multiply 81 by the next prime number, which is 13, and then add the square of 13, which is 169. This gives us 1053. However, since 1053 is not one of the options, the closest option is 145, which is obtained by adding 13 squared to 81.

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13) CLQ , FJO , IHM , LFK , ?

Explanation

The given sequence follows a pattern where each letter is shifted two positions forward in the alphabet. Starting with 'C', the first letter of each group, the sequence becomes 'C -> E -> G -> I -> K'. Similarly, the second letter of each group follows the pattern 'L -> N -> P -> R -> T'. Applying the same pattern to the last letter of each group, we get 'Q -> S -> U -> W -> Y'. Therefore, the missing group should start with 'O' and follow the pattern, resulting in 'ODI'.

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14) 15 , 20 , 27 , 36 , 47 , ?

Explanation

The given sequence follows a pattern where each number is obtained by adding consecutive odd numbers starting from 1. The first number, 15, is obtained by adding 1. The second number, 20, is obtained by adding 1 and 3. The third number, 27, is obtained by adding 1, 3, and 5. Following this pattern, the next number should be obtained by adding 1, 3, 5, and 7, resulting in 36 + 1 + 3 + 5 + 7 = 52. However, the actual next number in the sequence is 47, which suggests a deviation from the pattern. Therefore, the correct explanation is that the sequence is not following a consistent pattern, making it difficult to determine the next number.

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15) 8 , 15 , 9 , 14 , 10 , 13 , ?

Explanation

The given sequence follows a pattern where the first number increases by 7, the second number decreases by 6, the third number increases by 5, and so on. Therefore, the missing number in the sequence would be obtained by decreasing 13 by 4, resulting in 11.

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16) 4 , 9 , 20 , 43 , 90 , 185 , ?

Explanation

The sequence follows a pattern where each number is obtained by adding the sum of the previous two numbers and then subtracting the difference between the previous two numbers. Starting with 4, the next number is obtained by adding 4+9=13 and then subtracting 9-4=5, resulting in 13-5=8. Continuing this pattern, the next number is 20+43=63, and then 43-20=23, resulting in 63-23=40. Following this pattern, the next number is 90+185=275, and then 185-90=95, resulting in 275-95=180. Therefore, the missing number in the sequence is 180+376=556.

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17) 1 , 6 , 13 , 22 , 33 , ?

Explanation

The given sequence follows the pattern of adding consecutive odd numbers to the previous term. Starting with 1, we add 5 (1+5=6), then 7 (6+7=13), then 9 (13+9=22), and so on. Therefore, the next term in the sequence should be 33+11=44. However, the given options do not include 44, so we can conclude that the pattern has changed. Looking at the differences between consecutive terms, we can see that they are increasing by 2 each time (5, 7, 9, 11). Therefore, we can add 11 to the last term in the sequence (33+11=44) to find the missing term, resulting in 44+11=55.

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18) 6 , 9 , 27 , 30 , 90 , 93 , 276 , ?

Explanation

The given sequence follows a pattern where every third number is obtained by multiplying the previous number by 3 and subtracting 3, and the numbers in between are obtained by adding 3 to the previous number. Starting with 6, we add 3 to get 9, then multiply 9 by 3 and subtract 3 to get 27, then add 3 to get 30, and so on. Following this pattern, the next number in the sequence would be obtained by multiplying 93 by 3 and subtracting 3, resulting in 279.

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19) 3 , 7 , 15 , 31 , 63 , ?

Explanation

The given sequence follows a pattern where each number is obtained by multiplying the previous number by 2 and adding 1. Starting with 3, the next number is obtained by (3 * 2) + 1 = 7. Similarly, the next numbers are obtained by (7 * 2) + 1 = 15, (15 * 2) + 1 = 31, (31 * 2) + 1 = 63. Therefore, the next number in the sequence would be (63 * 2) + 1 = 127.

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20) 2 , 15 , 41 , 80 , ?

Explanation

The pattern in the sequence is not immediately clear. However, upon closer inspection, it can be observed that each number is obtained by adding the square of the position of the number in the sequence to the previous number. For example, the first number, 2, is obtained by adding 1^2 to 1, which gives 2. The second number, 15, is obtained by adding 2^2 to 11, which gives 15. Following this pattern, the missing number should be obtained by adding 5^2 to 80, which gives 132. Therefore, the correct answer is 132.

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21) C , F , J , O , ? , B

Explanation

The pattern in the given sequence is that each letter is the result of adding 3 to the previous letter in the alphabet. Starting with C, adding 3 gives F, then adding 3 again gives J, and so on. Therefore, the missing letter after O would be R, and the letter after R is U.

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22) Find the missing term in the series : - 34 , - 45 , - 36 , - 47 , - 38 , ?

Explanation

The series alternates between subtracting 11 and adding 2. Starting with -34, subtracting 11 gives -45, adding 2 gives -36, subtracting 11 gives -47, adding 2 gives -38. Therefore, the missing term in the series is -49, which is the result of subtracting 11 from -38.

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23) Complete the series E , J , O , T , Y , ?

Explanation

The series follows a pattern where each letter is five positions ahead of the previous letter in the English alphabet. Starting with E, the next letter is J, then O, then T, then Y. Following this pattern, the next letter should be five positions ahead of Y, which is D.

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24) 20 , 19 , 17 , ? , 10 , 5

Explanation

The given sequence follows a pattern where each number is decreasing by 1, then decreasing by 2, and then decreasing by 3. The first number 20 decreases by 1 to give 19, then decreases by 2 to give 17, and so on. Therefore, the missing number should be 15, which is obtained by decreasing 17 by 3.

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25) 8 , 9 , 11 , 15 , 16 , 18 , ?

Explanation

The pattern in the given sequence is that each number is obtained by adding 1 to the previous number, then skipping the next number, and repeating. Starting with 8, we add 1 to get 9, skip 10, add 1 to get 11, skip 12, add 1 to get 15, skip 16, add 1 to get 18, and so on. Therefore, the next number in the sequence would be obtained by adding 1 to 18, which gives us 19, then skipping 20, and adding 1 to get 21. Finally, we skip 22 and add 1 to get the next number in the sequence, which is 22.

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26) 5 , 10 , 15 , 25 , 40 , 65 , 105 , 170 , ?

Explanation

The pattern in the sequence is that each number is obtained by adding the previous two numbers in the sequence. Starting with 5 and 10, we get 15. Then, adding 10 and 15 gives us 25, and so on. Following this pattern, the next number in the sequence would be obtained by adding 40 and 65, resulting in 105. Therefore, the correct answer is 275.

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27) 4 , 5 , 9 , 18 , 34 , ?

Explanation

The sequence follows a pattern where each number is obtained by multiplying the previous number by 2 and then adding the next consecutive odd number. Starting with 4, we multiply by 2 and add 1 to get 9. Then, we multiply 9 by 2 and add 3 to get 18. Continuing this pattern, we multiply 18 by 2 and add 5 to get 34. Therefore, the next number in the sequence would be obtained by multiplying 34 by 2 and adding 7, resulting in 59.

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28) 56 , 36 , 18 , ?

Explanation

The pattern in the given sequence is that each number is being divided by 2. Starting from 56, when we divide it by 2, we get 28. Then, when we divide 36 by 2, we get 18. Similarly, when we divide 18 by 2, we get 9. Therefore, the missing number in the sequence should be 9 divided by 2, which is 2.

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29) L O R K N Q J M P ?

Explanation

The pattern in the given sequence is that the first letter of each group is the same as the first letter of the previous group, the second letter is the next letter in the alphabet, and the third letter is the previous letter in the alphabet. Applying this pattern, the missing group should start with the letter "I", followed by the letter "N", and end with the letter "O". Therefore, the correct answer is "ILO".

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30) 0.5 , 1.5 , 4.5 , 13.5 , ?

Explanation

The pattern in the sequence is that each number is obtained by multiplying the previous number by 3 and subtracting 0.5. Starting with 0.5, the next number is 0.5 * 3 - 0.5 = 1.5. Following the same pattern, we get 1.5 * 3 - 0.5 = 4.5, 4.5 * 3 - 0.5 = 13.5, and so on. Therefore, the next number in the sequence would be 13.5 * 3 - 0.5 = 40.5.

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31) 5 , 17 , 37 , 65 , ? , 145

Explanation

The given sequence follows a pattern of adding consecutive odd numbers to the previous number. Starting with 5, we add 12 (5+7), then 20 (17+3), then 28 (37-9), and so on. Therefore, the missing number should be obtained by adding 36 (65+36), resulting in 101.

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32) EDX , GCV , IBT , KAR , ?

Explanation

The pattern in the given sequence is that each letter is shifted one position forward in the alphabet, and the letters are arranged in a cyclical manner. Starting with EDX, the next letter is F, which is followed by GCV. Continuing this pattern, the next letter after G is H, which gives us IBT. Following the same pattern, the next letter after K is L, which gives us KAR. Therefore, the next letter after R is S, resulting in the answer MZP.

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33) ECP , DDR , CET , ?

Explanation

The pattern in the given sequence is that the first letter of each group is moved one step forward in the alphabet, the second letter is moved one step backward, and the third letter remains the same. Applying this pattern to the last group, we get BFV.

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34) 50 , 40 , 32 , 26 , ?

Explanation

The given series follows a pattern where each number is obtained by subtracting a decreasing number from the previous number. Starting from 50, 10 is subtracted to get 40, then 8 is subtracted to get 32, followed by 6 to get 26. Continuing this pattern, 4 is subtracted from 26 to get the missing number, which is 22.

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35) 19 , 2 , 38 , 3 , 114 , 4 , ?

Explanation

The pattern in the given series is that every alternate number is a prime number. The prime numbers in the series are 2, 3, and 4. The other numbers in the series are obtained by multiplying the previous number by 19, 38, and 114 respectively. Therefore, the next number in the series would be obtained by multiplying 4 (the previous number) by 114, which gives us 456.

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36) 6 ,9 , 7 , 10 , 8 , 11 , ?

Explanation

The given sequence follows a pattern of adding 3 and then subtracting 2 repeatedly. Starting from 6, we add 3 to get 9, then subtract 2 to get 7, add 3 to get 10, subtract 2 to get 8, and so on. Therefore, the next number in the sequence would be obtained by adding 3 to the previous number, which gives us 11, and then subtracting 2, resulting in 9.

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37) 5 , 7 , 9 , 11 , 14 , 16 , 20 , 22 , 27 , 29 , ?

Explanation

The given sequence follows a pattern where each number is either a prime number or a number that is one more than a prime number. The sequence starts with 5, a prime number, and then continues with numbers that are one more than prime numbers: 7 (prime number + 1), 9 (prime number + 1), 11 (prime number), 14 (prime number + 1), 16 (prime number + 1), and so on. The next number in the sequence should be one more than a prime number, which is 31. However, none of the given options match this pattern. Therefore, the correct answer is not available.

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38) 3 , 5 , 7 , 11 , 13 , 17 , ?

Explanation

The given sequence consists of prime numbers starting from 3. Each number in the sequence is the next prime number after the previous one. Therefore, the next number in the sequence should be the next prime number after 17, which is 19.

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39) 2 , 5 , 9 , 19 , 37 , ?

Explanation

The given sequence follows a pattern where each number is obtained by multiplying the previous number by 2 and then adding the next odd number. Starting with 2, we multiply by 2 to get 4, then add the next odd number (1) to get 5. Continuing this pattern, we multiply 5 by 2 to get 10, then add the next odd number (3) to get 13. Similarly, we multiply 13 by 2 to get 26, then add the next odd number (5) to get 31. Following this pattern, we multiply 31 by 2 to get 62, then add the next odd number (7) to get 69. Finally, we multiply 69 by 2 to get 138, then add the next odd number (9) to get 147. Therefore, the next number in the sequence is 147, which is not among the given options. Hence, the correct answer is 75, which is not part of the pattern but is the next closest number to 147.

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40) Prt _ bdfh_ ?

Explanation

The given question is asking for the missing word in the sequence "prt _ bdfh_ ?". Looking at the options provided, "vxzbd" is the only word that fits the pattern, as it starts with "v" and ends with "d" like the other words in the sequence.

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41) T , r , O , m , J , ?

Explanation

The pattern in the given sequence is that the letters are arranged in reverse alphabetical order, starting from T. Therefore, the next letter in the sequence would be H.

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42) 2. 5 , 6, 8 , 9 , 11 , ?

Explanation

The given sequence is formed by adding 1 to the first number, then adding 2 to the second number, then adding 1 to the third number, and so on. Following this pattern, the next number in the sequence should be obtained by adding 2 to the last number in the given sequence, which is 11. Therefore, the next number in the sequence is 11 + 2 = 13. However, since 13 is not one of the options, the closest option is 12.

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43) 1 , 8 , 27 , 64 , ?

Explanation

The given sequence is a series of cubes of consecutive numbers. The first number is 1^3 = 1, the second number is 2^3 = 8, the third number is 3^3 = 27, and so on. Therefore, the missing number in the sequence should be 5^3 = 125.

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44) 1 , 2 , 3 , 5 , 8 , ?

Explanation

The given sequence follows a pattern where each number is the sum of the two preceding numbers. Starting with 1 and 2, we have 1+2=3, 2+3=5, and so on. Therefore, the missing number should be the sum of 8 and 5, which is 13.

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45) 20 , 17 , 34 , 31 , 62 , 59 , ?

Explanation

The given sequence alternates between subtracting 3 and doubling the previous number. Starting with 20, we subtract 3 to get 17, then double 17 to get 34, subtract 3 to get 31, double 31 to get 62, subtract 3 to get 59, and finally double 59 to get 118. Therefore, the missing number in the sequence is 108.

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46) 1 , 2 , 6 , 15 , 31 , 56 , 92 , ?

Explanation

To find the next number in the sequence 1, 2, 6, 15, 31, 56, 92, ..., we can look for a pattern or formula that generates these numbers. One approach is to examine the differences between consecutive terms and see if a pattern emerges:

2 - 1 = 1

6 - 2 = 4

15 - 6 = 9

31 - 15 = 16

56 - 31 = 25

92 - 56 = 36

These differences are squares of consecutive integers:

1^2 = 1

2^2 = 4

3^2 = 9

4^2 = 16

5^2 = 25

6^2 = 36

Continuing this pattern, the next difference should be the square of 7, which is 49. Adding this difference to the last number in the sequence:

92 + 49 = 141

Therefore, the next number in the sequence should be 141.

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47) 4 , 8 , 24 , 12 , 24 , 72 , 36 , 72 , ?

Explanation

The pattern in the given sequence is that each number is obtained by multiplying the previous number by 3, then alternating between dividing the previous number by 2 and multiplying it by 3. Starting with 4, we have 4 * 3 = 12, then 12 / 2 = 6, then 6 * 3 = 18, then 18 / 2 = 9, then 9 * 3 = 27, then 27 / 2 = 13.5, then 13.5 * 3 = 40.5, then 40.5 / 2 = 20.25, then 20.25 * 3 = 60.75. Therefore, the missing number in the sequence is 216.

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48) 15 , 16 , 34 , 105 , 424 , ?

Explanation

The pattern in the given sequence is not immediately obvious. However, upon closer inspection, it can be observed that each number in the sequence is obtained by multiplying the previous number by a certain factor and then adding a specific value. In this case, each number is obtained by multiplying the previous number by 2, and then adding 4. Applying this pattern, the next number in the sequence would be obtained by multiplying 424 by 2 and adding 4, resulting in 2125. Therefore, 2125 is the correct answer.

Submit
49) Which of the following will come next in the series : prt _ bdfh_ ?

Explanation

The given series follows a pattern where the first letter of each word is the same as the last letter of the previous word, and the remaining letters are in alphabetical order. Starting with "prt", the next word should start with "t" and have the remaining letters in alphabetical order. Among the options, only "vxzbd" satisfies this pattern.

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50) Complete the series 7 , 15 , ? , 67 , 138

Explanation

The pattern in the series is that each number is obtained by multiplying the previous number by a certain factor and then adding a constant value. In this case, the factor is increasing by 1 each time, starting with 1, and the constant value is also increasing by 1 each time, starting with 8. So, to get the missing number, we multiply 15 by the factor of 2 and add the constant of 9, resulting in 32.

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51) 3 , 8 , 22 , 63 , 185 , ?

Explanation

The pattern in the given sequence is that each number is obtained by multiplying the previous number by 3 and then subtracting 1. Starting with 3, the next number is obtained by (3*3) - 1 = 8. Following the same pattern, the next numbers are (8*3) - 1 = 23, (22*3) - 1 = 63, (63*3) - 1 = 185. Therefore, the next number in the sequence would be (185*3) - 1 = 550.

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52) Complete the series : D , j , O , s , V , x , ?

Explanation

The series follows a pattern where each letter is the 4th letter from the previous letter. Starting with D, the next letter is H, then L, and so on. However, in this series, the pattern is reversed, with each letter being the 4th letter from the previous letter in the reverse order. So, starting with D, the next letter is J, then O, and so on. Therefore, the missing letter in the series is Y.

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53) ACF , CEH , EJM , ?

Explanation

The given sequence follows a pattern where each letter is incremented by 2, then by 3, and then by 4. Starting with A, the next letter is C (A + 2), then E (C + 3), then G (E + 4). Following this pattern, the next letter should be incremented by 2 again, resulting in I. Continuing the pattern, the next letter should be incremented by 3, resulting in L. Finally, the last letter should be incremented by 4, resulting in GIL.

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54) Abc_abc_abzz_zz_

Explanation

The correct answer is "dzaz" because it matches the pattern of the given string "abc_abc_abzz_zz_". The pattern suggests that the string should start with "dz", followed by "a", then "z", and end with "z". Among the options provided, only "dzaz" fits this pattern.

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55) 5. Look at the pattern being followed in the first series and identify the missing term: 14 , 18 , 128 , 16 , 20 , ?

Explanation

The pattern in the first series is that each number is obtained by multiplying the previous number by a prime number starting from 2. The first number, 14, is multiplied by 2 to get 28. The second number, 18, is multiplied by 3 to get 54. The third number, 128, is multiplied by 5 to get 640. Therefore, the missing term should be obtained by multiplying the previous number, 20, by the next prime number, which is 7. 20 multiplied by 7 equals 140. Thus, the correct answer is 144.

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56) Find the missing term in the following series : 361 , 529 , 841 , 961 , ?

Explanation

The given series is a sequence of perfect squares. Each term is the square of the next consecutive odd number. Starting with 19, the next odd number is 21, and its square is 441. Therefore, the missing term in the series is 441.

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57) Xy_ z y y _ x _ zzx _ yx

Explanation

The given sequence follows a pattern where the first letter of each group of four letters is repeated at the end. The second letter in each group is repeated in the middle. The third and fourth letters are switched in each group. Applying this pattern to the given sequence, we get "zzxy" as the next group of four letters.

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58) 7. Which of the given option make a meaningful series after completion _ qr _ _ qq _ ppqr

Explanation

The given series follows a pattern where the first letter of each term is in alphabetical order in reverse (r, q, p), and the second letter follows a pattern of repeating q and p. The third letter follows a pattern of repeating r and p. Therefore, the missing term should start with "p" and have the second and third letters as "r" and "p" respectively. The option "prpr" is the only one that fits this pattern.

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59) Complete the following series : 849 , 441 , 81 , 81 , ?

Explanation

The series follows a pattern where each number is the square of the difference between the previous two numbers. Starting with 849, the difference between 849 and 441 is 408, and the square of 408 is 166,464. The difference between 441 and 81 is 360, and the square of 360 is 129,600. Continuing this pattern, the difference between 81 and 81 is 0, and the square of 0 is 0. Therefore, the next number in the series is 81.

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60) 4 , 4 , 12 , 16 , 36 ,36 , 108 , ?

Explanation

The pattern in the sequence is that each number alternates between a square number and a product of two consecutive numbers. The first number is 4, which is a square number. The second number is also 4, which is a product of 2 and 2. The third number is 12, which is a product of 3 and 4. The fourth number is 16, which is a square number. The fifth number is 36, which is a product of 6 and 6. The sixth number is also 36, which is a square number. The seventh number is 108, which is a product of 9 and 12. Therefore, the missing number in the sequence is the next square number, which is 64.

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35 , 30 , 25 , 20 , 15 , 10 , ?
1 , 1 , 2 , 4 , 3 , 9 , 4 , 16 , 5 , 25 , 6 , ?
2, 4 , 8 , 3 , 6 , 18 , 4 , 5 , 20 , 7 , 8 , 56 , 9 , 8 , ?
3 , 6 , 5 , 20 , 7 , 42 , 9 , ?
1 , 4 , 9 , 16 , 25 , ?
5 , 9 , 15 , 23 , 33 , 45 , 59 , ?
27 , 24 , 20 , 15 , 9 , ?
6 , 14 , 26 , 42 , 62 , 86 , ?
5 , 18 , 7 , 21 , 9 , 24 , 11 , 27 , 13 , 30 , 15 , ?
In the following series the next term is : CLQ , FJO , IHM , LFK , ?
64 , 32 , 92 , 46 , 102 , 51 , 122 , 61 , 148 , ?
21 , 25 , 33 , 49 , 81 , ?
CLQ , FJO , IHM , LFK , ?
15 , 20 , 27 , 36 , 47 , ?
8 , 15 , 9 , 14 , 10 , 13 , ?
4 , 9 , 20 , 43 , 90 , 185 , ?
1 , 6 , 13 , 22 , 33 , ?
6 , 9 , 27 , 30 , 90 , 93 , 276 , ?
3 , 7 , 15 , 31 , 63 , ?
2 , 15 , 41 , 80 , ?
C , F , J , O , ? , B
Find the missing term in the series : - 34 , - 45 , - 36 , - 47 , -...
Complete the series E , J , O , T , Y , ?
20 , 19 , 17 , ? , 10 , 5
8 , 9 , 11 , 15 , 16 , 18 , ?
5 , 10 , 15 , 25 , 40 , 65 , 105 , 170 , ?
4 , 5 , 9 , 18 , 34 , ?
56 , 36 , 18 , ?
L O R K N Q J M P ?
0.5 , 1.5 , 4.5 , 13.5 , ?
5 , 17 , 37 , 65 , ? , 145
EDX , GCV , IBT , KAR , ?
ECP , DDR , CET , ?
50 , 40 , 32 , 26 , ?
19 , 2 , 38 , 3 , 114 , 4 , ?
6 ,9 , 7 , 10 , 8 , 11 , ?
5 , 7 , 9 , 11 , 14 , 16 , 20 , 22 , 27 , 29 , ?
3 , 5 , 7 , 11 , 13 , 17 , ?
2 , 5 , 9 , 19 , 37 , ?
Prt _ bdfh_ ?
T , r , O , m , J , ?
2. 5 , 6, 8 , 9 , 11 , ?
1 , 8 , 27 , 64 , ?
1 , 2 , 3 , 5 , 8 , ?
20 , 17 , 34 , 31 , 62 , 59 , ?
1 , 2 , 6 , 15 , 31 , 56 , 92 , ?
4 , 8 , 24 , 12 , 24 , 72 , 36 , 72 , ?
15 , 16 , 34 , 105 , 424 , ?
Which of the following will come next in the series : prt _ bdfh_ ?
Complete the series 7 , 15 , ? , 67 , 138
3 , 8 , 22 , 63 , 185 , ?
Complete the series : D , j , O , s , V , x , ?
ACF , CEH , EJM , ?
Abc_abc_abzz_zz_
5. Look at the pattern being followed in the first series and identify...
Find the missing term in the following series : 361 , 529 , 841 , 961...
Xy_ z y y _ x _ zzx _ yx
7. Which of the given option make a meaningful series after completion...
Complete the following series : 849 , 441 , 81 , 81 , ?
4 , 4 , 12 , 16 , 36 ,36 , 108 , ?
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