mathematics MCQs – Page 134

Practise multiple-choice questions from mathematics for competitive examinations and subject revision. Review each marked answer and report any item that may be outdated or unclear.

2661. 252 can be expressed as a product of primes as_______________?
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A. 2 * 3 * 3 * 3 * 7

B. 3 * 3 * 3 * 3 * 7

C. 2 * 2 * 2 * 3 * 7

D. 2 * 2 * 3 * 3 * 7
2662. Find the least number which when divided by 35 leaves remainder 25, when divided by 25 leaves remainder 15 and when divided by 15 leaves remainder 5?
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A. 435

B. 515

C. 420

D. 518

2663. The smallest number when increased by 1 is exactly divisible by 12, 18, 24, 32 and 40 is__________?
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A. 1449

B. 1440

C. 1439

D. 1459

2664. The smallest fraction, which each of 6/7, 5/14, 10/21 will divide exactly is_________?
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A. 30/7

B. 30/98

C. 50/294

D. 60/147

2665. Find the H.C.F of 54/9, 3 9/17 and 36/51?
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A. 6/153

B. 17

C. 6

D. 17/6

2666. The least number which should be added to 2497 so that the sum is exactly divisible by 5, 6, 4 and 3 is:
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A. 23

B. 3

C. 13

D. 33

2667. Which of the following has the most number of divisors?
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A. 176

B. 182

C. 99

D. 101

2668. H.C.F of 4 * 27 * 3125, 8 * 9 * 25 * 7 and 16 * 81 * 5 * 11 * 49 is___________?
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A. 180

B. 1260

C. 360

D. 540

2669. Find the H.C.F of 12, 16, 18 and 24?
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A. 3

B. 4

C. 2

D. 1

2670. In finding the HCF of two numbers, the last divisor was 41 and the successive quotients, starting from the first, where 2, 4 and 2. The numbers are______?
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A. 820,360

B. 820,369

C. 700,400

D. 800,500

2671. How many minimum numbers of whole square slabs are required for paving the floor 12.96 meters long and 3.84 meters side?
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A. 108

B. 192

C. 256

D. 216
2672. Three numbers are in the ratio 3:4:5 and their L.C.M is 2400. Their H.C.F is:
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A. 80

B. 120

C. 200

D. 40
2673. Which of the following has most number of divisors?
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A. 99

B. 101

C. 182

D. 176
2674. Find the greatest 4-digit number exactly divisible by 3, 4 and 5?
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A. 9957

B. 9985

C. 9960

D. 9975

2675. A merchant has three different types of milk: 435 liters, 493 liters and 551 liters. Find the least number of casks of equal size required to store all the milk without mixing.
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A. 61

B. 45

C. 51

D. 47

2676. What is the least number which when divided by 8, 12, 18 and 24 leaves the remainders 4, 8, 14 and 20 respectively?
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A. None

B. 58

C. 78

D. 68
2677. Find the greatest number which will divide 25, 73 and 97 as so to leave the same remainder in each case?
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A. 12

B. 32

C. 18

D. 24
2678. Find the greatest number that, while dividing 47, 215 and 365, gives the same remainder in each case?
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A. 6

B. 5

C. 4

D. 3

2679. The least number of five digits that have 144 their HCF is__________?
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A. 10085

B. 10070

C. 10080

D. 10075

2680. Find the lowest common multiple of 24, 36 and 40.
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A. 360

B. 120

C. 480

D. 240