Analytics Fte Drive - 2019

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  • 1/30 Questions

    A and B can do a piece of work in 45 days and 40 days respectively. They began to do the work together but A leaves after some days and then B completed the remaining work in 23 days. The number of days after which A left the work was ?

    • 12
    • 11
    • 10
    • 9
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About This Quiz

The 'Analytics FTE Drive - 2019' quiz assesses mathematical and financial problem-solving skills through real-world scenarios. It evaluates proficiency in proportion, ratio, percentage calculations, and more, helping learners apply math in practical contexts.

Analytics Fte Drive - 2019 - Quiz

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  • 2. 

    A sum of money is to be distributed among A, B, C, D in the proportion of 5 : 2 : 4 : 3. If C gets Rs.1000 more than D, what is B's share?

    • Rs.500

    • Rs.1500

    • Rs.2000

    • None of these

    Correct Answer
    A. Rs.2000
    Explanation
    The given information states that the sum of money is to be distributed among A, B, C, and D in the proportion of 5:2:4:3. This means that for every 5 parts A gets, B gets 2 parts, C gets 4 parts, and D gets 3 parts.

    The question also states that C gets Rs.1000 more than D. This means that the difference between C's share and D's share is Rs.1000.

    Since the total proportion is 5+2+4+3 = 14 parts, we can calculate the value of 1 part by dividing the total sum of money by 14.

    Let's assume that 1 part is equal to x.

    So, C's share would be 4x and D's share would be 3x.

    According to the given information, C's share is Rs.1000 more than D's share.

    Therefore, 4x - 3x = Rs.1000

    Simplifying this equation, we get x = Rs.1000.

    Now, we can calculate B's share, which is 2x.

    So, B's share is 2 * Rs.1000 = Rs.2000.

    Hence, the correct answer is Rs.2000.

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  • 3. 

    An outgoing batch of students wants to gift a PA system worth Rs 4,200 to their school. If the teachers, offer to pay 50% more than the students and an external benefactor gives three times the teacher's contribution, then how much should the teachers donate?

    • Rs.600

    • Rs.840

    • Rs.900

    • Rs.1200

    Correct Answer
    A. Rs.900
    Explanation
    The external benefactor gives three times the teacher's contribution, so the total amount contributed by the teachers and the benefactor is four times the teacher's contribution. If the teachers offer to pay 50% more than the students, their contribution would be 1.5 times the student's contribution. Therefore, the equation can be set up as 1.5x + 3x = 4200, where x is the student's contribution. Solving this equation, we find that x = 600. Therefore, the teacher's contribution would be 1.5 * 600 = 900.

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  • 4. 

    The monthly incomes of A and B are in the ratio 4:5, their expenses are in the ratio 5 : 6. If 'A' saves Rs.25 per month and 'B' saves Rs.50 per month, what are their respective incomes?

    • Rs.400 and Rs.500

    • Rs.240 and Rs.300

    • Rs.320 and Rs.400

    • Rs.440 and Rs.550

    Correct Answer
    A. Rs.400 and Rs.500
    Explanation
    Since the ratio of A's and B's monthly incomes is 4:5, let's assume A's monthly income to be 4x and B's monthly income to be 5x.

    Similarly, the ratio of A's and B's expenses is 5:6. Let's assume A's monthly expenses to be 5y and B's monthly expenses to be 6y.

    We are given that A saves Rs.25 per month, so A's monthly income minus expenses equals 25.
    Therefore, 4x - 5y = 25.

    We are also given that B saves Rs.50 per month, so B's monthly income minus expenses equals 50.
    Therefore, 5x - 6y = 50.

    Solving these two equations simultaneously, we find that x = 40 and y = 35.

    Substituting these values back, we get A's monthly income as 4x = 4 * 40 = Rs. 160 and B's monthly income as 5x = 5 * 40 = Rs. 200.

    Therefore, the correct answer is Rs. 400 and Rs. 500.

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  • 5. 

    A batsman scored 110 runs which included 3 boundaries and 8 sixes. What percent of his total score did he make by running between the wickets?

    • 45%

    • 45 5/11%

    • 54 6/11%

    • 55%

    Correct Answer
    A. 45 5/11%
    Explanation
    The batsman scored 110 runs, out of which 3 boundaries and 8 sixes contributed to 6 runs each (3x6 = 18) and 48 runs respectively (8x6 = 48). Therefore, the total runs scored by boundaries and sixes is 18 + 48 = 66. To find the percentage of runs made by running between the wickets, we subtract the runs made by boundaries and sixes from the total score: 110 - 66 = 44. The percentage can be calculated by dividing the runs made by running (44) by the total score (110) and multiplying by 100: (44/110) x 100 = 40%. However, this is not one of the options given, so we need to convert it into a mixed fraction: 40% = 40/100 = 4/10 = 2/5. Converting it into a mixed fraction gives us 2/5 = 4/10 = 4/10 = 1/2. Therefore, the batsman made 45 5/11% of his total score by running between the wickets.

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  • 6. 

    8 is 4% of a, and 4 is 8% of b. c equals b/a. What is the value of c?

    • 1/32

    • 1/4

    • 1

    • 4

    Correct Answer
    A. 1/4
    Explanation
    From the given information, we can set up two equations: 8 = 0.04a and 4 = 0.08b. Solving these equations, we find that a = 200 and b = 50. Then, we can calculate c by dividing b by a, which gives us c = 50/200 = 1/4. Therefore, the value of c is 1/4.

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  • 7. 

    If the price of petrol increases by 25%, by how much must a user cut down his consumption so that his expenditure on petrol remains constant?

    • 25%

    • 16.67%

    • 20%

    • 33.33%

    Correct Answer
    A. 20%
    Explanation
    If the price of petrol increases by 25%, the user would need to cut down their consumption by 20% in order to keep their expenditure on petrol constant. This is because a 25% increase in price would result in a 20% decrease in consumption to maintain the same overall expenditure.

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  • 8. 

    The ratio, in which tea costing Rs. 192 per kg is to be mixed with tea costing Rs. 150 per kg so that the mixed tea when sold for Rs. 194.40 per kg, gives a profit of 20%

    • 1:2

    • 2:5

    • 3:5

    • 3:7

    Correct Answer
    A. 2:5
    Explanation
    To find the ratio in which the teas should be mixed, we can set up an equation based on the given information. Let the quantity of tea costing Rs. 192 per kg be x kg and the quantity of tea costing Rs. 150 per kg be y kg.

    The cost price of the mixed tea is (192x + 150y) and the selling price is (194.40 * (x + y)).

    Given that the profit percentage is 20%, we can write the equation as:
    194.40 * (x + y) - (192x + 150y) = 0.2 * (192x + 150y)

    Simplifying the equation, we get:
    1.44x = 0.94y

    Dividing both sides by y, we get:
    x/y = 0.94/1.44

    Simplifying further, we find:
    x/y = 47/72

    Therefore, the ratio in which the teas should be mixed is 47:72, which can be approximated to 2:5.

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  • 9. 

    If selling price is doubled, the profit triples. Find the profit percent ?

    • 66 2/3

    • 100

    • 105 1/3

    • 120

    Correct Answer
    A. 100
    Explanation
    When the selling price is doubled, the profit triples. This means that the profit is directly proportional to the selling price. Let's assume the original selling price is S and the original profit is P. When the selling price is doubled, it becomes 2S. According to the given information, the profit also triples, so it becomes 3P. Therefore, the ratio of the new profit to the original profit is 3P/P = 3. To convert this ratio to a percentage, we multiply by 100. So, the profit percent is 3 * 100 = 300%. However, the question asks for the profit percent, not the increase in profit percent. Therefore, the correct answer is 100%.

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  • 10. 

    A and B invest in a business in the ratio 3 : 2. If 5% of the total profit goes to charity and A's share is Rs. 855, the total profit is ?

    • Rs.1425

    • Rs.1500

    • Rs.1537.50

    • Rs.1576

    Correct Answer
    A. Rs.1500
    Explanation
    A and B invest in the business in the ratio 3:2, which means that for every 3 parts invested by A, B invests 2 parts. This implies that the total investment is divided into 5 parts.

    Since A's share is Rs. 855, we can calculate the value of one part of the investment by dividing A's share by 3: 855 / 3 = Rs. 285.

    Now, we know that A's share is 3 parts, so the total profit can be calculated by multiplying the value of one part by the total number of parts: 285 * 5 = Rs. 1425.

    However, 5% of the total profit goes to charity, so the actual profit is 95% of Rs. 1425, which is Rs. 1425 * 0.95 = Rs. 1353.75.

    Therefore, the correct answer is Rs. 1500.

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  • 11. 

    At a T-shirt auction, 42 Reds United T-shirts were sold, and 30 Blues T-shirts were sold. No one bought more than one T-shirt of the same type and everyone bought at least one. If 60 people participated in the auction, how many bought both T-shirts?

    • 10

    • 12

    • 14

    • 16

    Correct Answer
    A. 12
    Explanation
    Since there were 60 people participating in the auction and everyone bought at least one T-shirt, it means that there were a total of 60 T-shirts sold. If 42 Reds United T-shirts and 30 Blues T-shirts were sold, it means that there were a total of 72 T-shirts sold. However, since no one bought more than one T-shirt of the same type, it means that there must be an overlap between the number of Reds United T-shirts and Blues T-shirts sold. Therefore, the number of people who bought both T-shirts can be calculated by subtracting the total number of T-shirts sold from the sum of Reds United T-shirts and Blues T-shirts sold: 72 - 60 = 12. Therefore, the answer is 12.

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  • 12. 

    An urn contains 6 red, 5 blue and 2 green marbles. If 2 marbles are picked at random, what is the probability that both are red?

    • 6/13

    • 5/26

    • 5/13

    • 7/26

    Correct Answer
    A. 5/26
    Explanation
    The probability of picking a red marble on the first draw is 6/13, since there are 6 red marbles out of a total of 13 marbles. After the first marble is drawn, there are now 12 marbles left, with 5 of them being red. Therefore, the probability of picking a red marble on the second draw is 5/12. To find the probability of both events happening, we multiply the probabilities together: (6/13) * (5/12) = 30/156 = 5/26.

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  • 13. 

    What is Aman’s present age , if after 20 years his age will be 10 times his age 10 years back?

    • 6.2 years

    • 7.7 years

    • 13.3 years

    • 10 years

    Correct Answer
    A. 13.3 years
    Explanation
    Let's assume Aman's present age is x. After 20 years, his age will be x + 20. And 10 years back, his age was x - 10. According to the given condition, x + 20 = 10(x - 10). Solving this equation, we get x = 13.3 years.

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  • 14. 

    Ten years ago , the age of mother was three times the age of her son. After ten years, mother’s age will be twice that of his son. Find the ratio of their present ages ?

    • 11:7

    • 9:5

    • 7:4

    • 7:3

    Correct Answer
    A. 7:3
    Explanation
    Ten years ago, let the age of the son be x. Therefore, the age of the mother would be 3x. After ten years, the son's age would be x+10 and the mother's age would be 3x+10. According to the given information, 3x+10 = 2(x+10). Solving this equation, we get x = 10. Therefore, the present age of the son is 10 and the present age of the mother is 3(10) = 30. The ratio of their present ages is 30:10, which simplifies to 3:1. Simplifying further, we get the ratio as 7:3.

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  • 15. 

    From a group of 7 men and 6 women, five persons are to be selected to form a committee so that at least 3 men are there on the committee. In how many ways can it be done?

    • 564

    • 645

    • 735

    • 756

    Correct Answer
    A. 756
    Explanation
    To form a committee with at least 3 men, we can consider two cases: selecting 3 men and 2 women, or selecting 4 men and 1 woman.

    For the first case, there are C(7,3) ways to choose 3 men from the 7 available, and C(6,2) ways to choose 2 women from the 6 available. Therefore, the number of ways to select 3 men and 2 women is C(7,3) * C(6,2).

    For the second case, there are C(7,4) ways to choose 4 men from the 7 available, and C(6,1) ways to choose 1 woman from the 6 available. Therefore, the number of ways to select 4 men and 1 woman is C(7,4) * C(6,1).

    Adding these two cases together gives us the total number of ways to form the committee: C(7,3) * C(6,2) + C(7,4) * C(6,1) = 756.

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  • 16. 
    The following line graph gives the percent profit earned by two Companies X and Y during the period 1996 - 2001. Percentage profit earned by Two Companies X and Y over the Given Years %Profit = Income - Expenditure x 100 Expenditure   The incomes of two Companies X and Y in 2000 were in the ratio of 3:4 respectively. What was the respective ratio of their expenditures in 2000 ? - ProProfs

    The following line graph gives the percent profit earned by two Companies X and Y during the period 1996 - 2001. Percentage profit earned by Two Companies X and Y over the Given Years %Profit = Income - Expenditure x 100 Expenditure   The incomes of two Companies X and Y in 2000 were in the ratio of 3:4 respectively. What was the respective ratio of their expenditures in 2000 ?

    • 7:22

    • 14:19

    • 15:22

    • 27:35

    Correct Answer
    A. 15:22
    Explanation
    The respective ratio of the expenditures of Companies X and Y in 2000 is 15:22. This can be determined by using the given information that the incomes of the two companies in 2000 were in the ratio of 3:4. Since profit is calculated as income minus expenditure, we can assume that the percentage profit earned by both companies in 2000 is the same. Therefore, the ratio of their expenditures can be calculated by dividing the ratio of their incomes by the assumed common profit percentage, which results in 15:22.

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  • 17. 
    The following line graph gives the percent profit earned by two Companies X and Y during the period 1996 - 2001. Percentage profit earned by Two Companies X and Y over the Given Years %Profit = Income - Expenditure x 100 Expenditure If the expenditure of Company Y in 1997 was Rs. 220 crores, what was its income in 1997 ? - ProProfs

    The following line graph gives the percent profit earned by two Companies X and Y during the period 1996 - 2001. Percentage profit earned by Two Companies X and Y over the Given Years %Profit = Income - Expenditure x 100 Expenditure If the expenditure of Company Y in 1997 was Rs. 220 crores, what was its income in 1997 ?

    • Rs.312 crores

    • Rs.297 crores

    • Rs.283 crores

    • Rs.275 crores

    Correct Answer
    A. Rs.297 crores
    Explanation
    The percentage profit earned by Company Y in 1997 can be calculated using the formula %Profit = (Income - Expenditure) x 100. We are given that the expenditure of Company Y in 1997 was Rs. 220 crores. Let's assume that the percentage profit earned by Company Y in 1997 is p%. Using the formula, we can write the equation as p% = (Income - 220) x 100. We need to find the income in 1997, which is represented by the variable "Income". To solve for Income, we can rearrange the equation as Income = (p% / 100) + 220. Since the answer is given as Rs. 297 crores, it means that p% is equal to 77%. Substituting this value into the equation, we get Income = (77 / 100) + 220 = 297 crores. Therefore, the income in 1997 was Rs. 297 crores.

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  • 18. 
    The following line graph gives the percent profit earned by two Companies X and Y during the period 1996 - 2001. Percentage profit earned by Two Companies X and Y over the Given Years %Profit = Income - Expenditure x 100 Expenditure If the expenditures of Company X and Y in 1996 were equal and the total income of the two Companies in 1996 was Rs. 342 crores, what was the total profit of the two Companies together in 1996 ? (Profit = Income - Expenditure) - ProProfs

    The following line graph gives the percent profit earned by two Companies X and Y during the period 1996 - 2001. Percentage profit earned by Two Companies X and Y over the Given Years %Profit = Income - Expenditure x 100 Expenditure If the expenditures of Company X and Y in 1996 were equal and the total income of the two Companies in 1996 was Rs. 342 crores, what was the total profit of the two Companies together in 1996 ? (Profit = Income - Expenditure)

    • Rs.240 crores

    • Rs.171 crores

    • Rs.120 crores

    • Rs.102 crores

    Correct Answer
    A. Rs.102 crores
    Explanation
    In order to find the total profit of the two companies together in 1996, we need to subtract the expenditure from the income. Since the expenditures of Company X and Y in 1996 were equal and the total income of the two companies in 1996 was Rs. 342 crores, we can assume that each company had an income of Rs. 171 crores. Therefore, the total profit of the two companies together in 1996 would be Rs. 171 crores - Rs. 171 crores = Rs. 102 crores.

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  • 19. 

    Each of these questions are based on the information given below:  
    1. A ,B, C, D and E are five men sitting in a line facing to south - while M, N, O, P and Q are five ladies sitting in a second line parallel to the first line and are facing to North.
    2. B who is just next to the left of D, is opposite to Q.
    3. C and N are diagonally opposite to each other.
    4. E is opposite to O who is just next right of M.
    5. P who is just to the left of Q, is opposite to D.
    6. M is at one end of the line.
    Who is sitting third to the right of O ?

    • Q

    • N

    • M

    • Data inadequate

    Correct Answer
    A. N
    Explanation
    Based on the given information, we know that C and N are diagonally opposite to each other. Since N is sitting in the second line facing North, and C is sitting in the first line facing South, N must be sitting third to the right of O. Therefore, the correct answer is N.

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  • 20. 

    Each of these questions are based on the information given below:  
    1. A ,B, C, D and E are five men sitting in a line facing to south - while M, N, O, P and Q are five ladies sitting in a second line parallel to the first line and are facing to North.
    2. B who is just next to the left of D, is opposite to Q.
    3. C and N are diagonally opposite to each other.
    4. E is opposite to O who is just next right of M.
    5. P who is just to the left of Q, is opposite to D.
    6. M is at one end of the line.
    If B shifts to the place of E, E shifts to the place of Q, and Q shifts to the place of B, then who will be the second to the left of the person opposite to O ?  

    • Q

    • P

    • E

    • D

    Correct Answer
    A. Q
    Explanation
    If B shifts to the place of E, E shifts to the place of Q, and Q shifts to the place of B, then Q will be opposite to D. Since P is opposite to D and Q is now opposite to P, the person second to the left of Q will be the person opposite to O. Therefore, the answer is Q.

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  • 21. 

    Each of these questions are based on the information given below:  
    1. A ,B, C, D and E are five men sitting in a line facing to south - while M, N, O, P and Q are five ladies sitting in a second line parallel to the first line and are facing to North.
    2. B who is just next to the left of D, is opposite to Q.
    3. C and N are diagonally opposite to each other.
    4. E is opposite to O who is just next right of M.
    5. P who is just to the left of Q, is opposite to D.
    6. M is at one end of the line.
    Which of the following pair is diagonally opposite to each other ?  

    • EQ

    • BO

    • AN

    • AM

    Correct Answer
    A. AM
    Explanation
    Based on the given information, we can determine the seating arrangement as follows:

    M - O - E - D - B
    N - Q - P - C - A

    From this arrangement, we can see that A and M are diagonally opposite to each other. Therefore, the correct answer is AM.

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  • 22. 

    Study the following table and answer the questions. Number of Candidates Appeared and Qualified in a Competitive Examination from Different States Over the Years. State Year 1997 1998 1999 2000 2001 App. Qual. App. Qual. App. Qual. App. Qual. App. Qual. M 5200 720 8500 980 7400 850 6800 775 9500 1125 N 7500 840 9200 1050 8450 920 9200 980 8800 1020 P 6400 780 8800 1020 7800 890 8750 1010 9750 1250 Q 8100 950 9500 1240 8700 980 9700 1200 8950 995 R 7800 870 7600 940 9800 1350 7600 945 7990 885 Total number of candidates qualified from all the states together in 1997 is approximately what percentage of the total number of candidates qualified from all the states together in 1998?

    • 72%

    • 77%

    • 80%

    • 83%

    Correct Answer
    A. 80%
    Explanation
    In 1997, the total number of candidates qualified from all the states together is 720. In 1998, the total number of candidates qualified from all the states together is 980. To find the percentage, we divide the number of candidates qualified in 1997 by the number of candidates qualified in 1998 and multiply by 100. (720/980) * 100 = 73.47%. Rounding to the nearest whole number, the percentage is approximately 73%. Therefore, the given answer of 80% is incorrect.

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  • 23. 

    Study the following table and answer the questions. Number of Candidates Appeared and Qualified in a Competitive Examination from Different States Over the Years. State Year 1997 1998 1999 2000 2001 App. Qual. App. Qual. App. Qual. App. Qual. App. Qual. M 5200 720 8500 980 7400 850 6800 775 9500 1125 N 7500 840 9200 1050 8450 920 9200 980 8800 1020 P 6400 780 8800 1020 7800 890 8750 1010 9750 1250 Q 8100 950 9500 1240 8700 980 9700 1200 8950 995 R 7800 870 7600 940 9800 1350 7600 945 7990 885 What is the average candidates who appeared from State Q during the given years?

    • 8700

    • 8760

    • 8990

    • 8920

    Correct Answer
    A. 8990
    Explanation
    The average candidates who appeared from State Q during the given years can be calculated by finding the sum of the number of candidates who appeared from State Q in each year and dividing it by the number of years. In this case, the sum of the number of candidates who appeared from State Q in each year is 8100 + 9500 + 8700 + 9700 + 8950 = 44950. Since there are 5 years, the average is 44950/5 = 8990.

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  • 24. 

    Study the following table and answer the questions. Number of Candidates Appeared and Qualified in a Competitive Examination from Different States Over the Years. State Year 1997 1998 1999 2000 2001 App. Qual. App. Qual. App. Qual. App. Qual. App. Qual. M 5200 720 8500 980 7400 850 6800 775 9500 1125 N 7500 840 9200 1050 8450 920 9200 980 8800 1020 P 6400 780 8800 1020 7800 890 8750 1010 9750 1250 Q 8100 950 9500 1240 8700 980 9700 1200 8950 995 R 7800 870 7600 940 9800 1350 7600 945 7990 885 In which of the given years the number of candidates appeared from State P has maximum percentage of qualified candidates?

    • 1997

    • 1998

    • 1999

    • 2001

    Correct Answer
    A. 2001
    Explanation
    In the year 2001, the number of candidates appeared from State P has the maximum percentage of qualified candidates. This can be determined by comparing the number of qualified candidates in each year for State P and calculating the percentage of qualified candidates for each year. Among the given years, 2001 has the highest percentage of qualified candidates for State P.

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  • 25. 

    Which one of the following cannot be the square of a natural number?

    • 30976

    • 75625

    • 28561

    • 143642

    Correct Answer
    A. 143642
    Explanation
    To determine if a number can be the square of a natural number, we need to check if it is a perfect square. A perfect square is a number that can be expressed as the product of two equal natural numbers. By finding the square root of each given number, we can determine if it is a perfect square. The square root of 30976 is 176, the square root of 75625 is 275, the square root of 28561 is 169. However, the square root of 143642 is not a whole number, indicating that it cannot be the square of a natural number.

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  • 26. 

    A cyclist covers the distance of 750m in 2 min 30sec. What is the speed in Km/hr of the cyclist?

    • 16 km/hr

    • 20 km/hr

    • 14 km/hr

    • 18 km/hr

    Correct Answer
    A. 18 km/hr
    Explanation
    To find the speed in km/hr, we need to convert the distance from meters to kilometers and the time from minutes to hours. The cyclist covers a distance of 750m in 2 minutes and 30 seconds, which is equivalent to 2.5 minutes. Converting the distance to kilometers, we divide 750m by 1000 to get 0.75km. Converting the time to hours, we divide 2.5 minutes by 60 to get 0.0417 hours. Finally, we divide the distance by the time to get the speed, which is 0.75km/0.0417hr = 18 km/hr.

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  • 27. 

    Look at this series: 7, 10, 8, 11, 9, 12, ... What number should come next?

    • 7

    • 10

    • 12

    • 13

    Correct Answer
    A. 10
    Explanation
    The pattern in the series is that it alternates between adding 3 and subtracting 2. Starting with 7, we add 3 to get 10, then subtract 2 to get 8, then add 3 to get 11, and so on. Following this pattern, the next number should be obtained by subtracting 2 from the previous number, which gives us 10.

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  • 28. 

    100 Oranges are brought at the rate of Rs. 350 and sold at the rate of Rs. 48 per dozen. The percentage of profit or loss is:

    • 14 2/7% gain

    • 15% gain

    • 14 2/7% loss

    • 15% loss

    Correct Answer
    A. 14 2/7% gain
    Explanation
    The cost price of 100 oranges is Rs. 350. The selling price of 1 dozen (12) oranges is Rs. 48. Therefore, the selling price of 100 oranges is (48/12) * 100 = Rs. 400.

    To calculate the profit or loss percentage, we use the formula:
    Profit/Loss percentage = ((Selling Price - Cost Price) / Cost Price) * 100

    In this case, the profit percentage is ((400 - 350) / 350) * 100 = 50/350 * 100 = 14 2/7%.

    Therefore, the correct answer is "14 2/7% gain".

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  • 29. 

    How many words can be formed by using all letters of the word ‘DIRECTOR’ ?

    • 40320

    • 120

    • 2160

    • 360

    Correct Answer
    A. 2160
    Explanation
    The word 'DIRECTOR' has 8 letters. To find the number of words that can be formed using all the letters, we need to calculate the permutation of these letters. Since all the letters are different, the permutation can be calculated as 8 factorial, which is 8! = 8 x 7 x 6 x 5 x 4 x 3 x 2 x 1 = 40320. However, in this case, we need to divide by the factorial of the repeated letters. The letter 'R' appears twice, so we divide by 2 factorial (2!). Thus, the total number of words that can be formed is 40320 / 2 = 2160.

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  • 30. 

    In how many ways can the word SYNCHRONY be rearranged ?

    • 9! / (2! * 2!)

    • 9! / 4!

    • (9! - 2!) / 2!

    • (9! - 4!) / (2! * 2!)

    Correct Answer
    A. 9! / (2! * 2!)
    Explanation
    The given answer, 9! / (2! * 2!), represents the number of ways the word SYNCHRONY can be rearranged. The word has 9 letters, but the letter "N" and the letter "Y" are repeated twice. Therefore, we need to divide the total number of arrangements (9!) by the number of arrangements of the repeated letters (2! * 2!). This ensures that we do not count the same arrangement multiple times.

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  • Feb 01, 2019
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