Category: Problems on L.C.M and H.C.F

Find the least square number which is divisible by 10, 12, 15 and 18?

Hamad Problems on L.C.M and H.C.F 20/10/2021

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A. 1600
B. 900
C. 3600
D. 2500

A, B and C start at the same time in the same direction to run around a circular stadium. A completes a round in 252 seconds, B in 308 seconds and C in 198 seconds, all starting at the same point. After what time will they meet again at the starting point?

Hamad Problems on L.C.M and H.C.F 19/10/2021

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A. 26 min 18 sec
B. 42 min 36 sec
C. 45 min
D. 46 min 12 sec
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The smallest fraction, which each of 6/7, 5/14, 10/21 will divide exactly is_________?

Hamad Problems on L.C.M and H.C.F 27/09/2021

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A. 30/7
B. 30/98
C. 60/147
D. 50/294
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Three numbers are in the ratio 3:4:5 and their L.C.M is 2400. Their H.C.F is:

Hamad Problems on L.C.M and H.C.F 14/09/2021

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A. 40
B. 80
C. 120
D. 200
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The product of two numbers is 2025 and their HCF is 15 their LCM is____________?

Hamad Problems on L.C.M and H.C.F 11/09/2021

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A. 2040
B. 2010
C. 135
D. 150

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?

Hamad Problems on L.C.M and H.C.F 14/08/2021

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A. 420
B. 515
C. 435
D. 518

Find the greatest number that exactly divides 35, 91 and 840?

Hamad Problems on L.C.M and H.C.F 11/08/2021

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A. 5
B. 6
C. 7
D. 8
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The L.C.M of two numbers is 48. The numbers are in the ratio 2:3. The sum of numbers is__________?

Hamad Problems on L.C.M and H.C.F 15/07/2021

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A. 28
B. 32
C. 40
D. 64
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LCM of 1/3, 5/6, 5/4, 10/7 is_________?

Hamad Problems on L.C.M and H.C.F 04/07/2021

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A. 10/7
B. 10
C. 10/11
D. 11/10
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Find the least number of five digits which is exactly divisible by 12, 15 and 18?

Hamad Problems on L.C.M and H.C.F 20/05/2021

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A. 1080
B. 10080
C. 10025
D. 11080
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