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Two bases lie on the upper and lower surfaces of a cylinder.
A.
True
B.
False
Correct Answer A. True
Explanation The statement is true because a cylinder has two circular bases, one on the top and one on the bottom. These bases lie on the upper and lower surfaces of the cylinder, making the statement accurate.
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2.
The hands of a clock at 3.00 shows acute angle.
A.
True
B.
False
Correct Answer B. False
Explanation The hands of a clock at 3.00 do not show an acute angle. At 3.00, the minute hand points to the 12 while the hour hand points to the 3. This creates a right angle between the two hands, not an acute angle. Therefore, the statement is false.
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3.
Thirty four thousand two hundred and eighty four = 34, 284
A.
True
B.
False
Correct Answer A. True
Explanation The given statement is true because the number "Thirty four thousand two hundred and eighty four" can be written in numerical form as "34,284".
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4.
Write the number name of 4,00,000 = ?
Correct Answer Four lakhs
Explanation The number 4,00,000 is written as "Four lakhs" because in the Indian numbering system, a lakh is equivalent to 100,000. Therefore, when the number 4 is followed by five zeros, it is read as "Four lakhs".
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5.
1, 3, 6, ___, 15, ____, 28
Correct Answer 10, 21
Explanation The given sequence follows a pattern where each number is obtained by adding the next odd number. Starting with 1, we add 2 to get 3, then add 3 to get 6, and so on. The missing numbers are obtained by adding the next odd numbers, which are 4 and 5, respectively. Hence, the missing numbers are 10 and 21.
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6.
____ is a common to number among square and triangular numbers.
Correct Answer 1
Explanation The number that is common to both square numbers and triangular numbers is 1.
Explanation:
A square number is the result of multiplying a number by itself (e.g., 11, 22, 3*3, ...), and the first square number is 1.
A triangular number is the sum of the first n natural numbers (e.g., 1, 1+2, 1+2+3, ...), and the first triangular number is also 1.
Therefore, 1 is common to both sets of numbers.
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7.
5 km 700 m + 12 km 450 m = _____________
A.
19 km 150m
B.
18 km150 m
C.
7 km 350 m
Correct Answer B. 18 km150 m
Explanation The given question asks to add two distances: 5 km 700 m and 12 km 450 m. To add these distances, we add the kilometers and the meters separately. Adding the kilometers gives us 17 km, and adding the meters gives us 1150 m. However, since 1000 m is equal to 1 km, we can convert the 1150 m to km by dividing it by 1000. This gives us 1.15 km. Adding the kilometers and the converted meters gives us a total distance of 18 km 150 m. Therefore, the correct answer is 18 km 150 m.
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8.
75 m 15 cm x 5 = ______
A.
375 m 75 cm
B.
300 m 75 cm
C.
80 m 20 cm
Correct Answer A. 375 m 75 cm
Explanation To find the product of 75 m 15 cm and 5, we multiply the whole numbers and the decimal numbers separately. Multiplying 75 by 5 gives us 375. Multiplying 15 cm by 5 gives us 75 cm. Therefore, the final answer is 375 m 75 cm.
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9.
55 km 75 cm - 23 km 40 cm = _______________
A.
30 km 35 m
B.
79 km 15 m
C.
32 km 35m
Correct Answer C. 32 km 35m
Explanation To find the difference between two distances, we subtract the smaller distance from the larger distance. In this case, we subtract 23 km 40 cm from 55 km 75 cm. When subtracting, we start with the centimeters and borrow from the meters if needed. After subtracting the centimeters, we subtract the meters. The result is 32 km 35 m. Therefore, the correct answer is 32 km 35 m.
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10.
Ram works on his computer from morning 10 'o' clock to evening 3.30. How long does he work on his computer?
A.
13.30 hours
B.
6.30 hours
C.
5.30 hours
Correct Answer C. 5.30 hours
Explanation Ram works on his computer from morning 10 o'clock to evening 3.30, which is a total of 5.30 hours.