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

Find the greatest 4-digit number exactly divisible by 3, 4 and 5?

Hamad Problems on L.C.M and H.C.F 10/03/2021

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A. 9985
B. 9960
C. 9957
D. 9975
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The product of two numbers is 2028 and their H.C.F is 13. The number of such pairs is__________?

Hamad Problems on L.C.M and H.C.F 26/02/2021

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A. 1
B. 2
C. 3
D. 4
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A room is 6 meters 24 centimeters in length and 4 meters 32 centimeters in width. Find the least number of square tiles of equal size required to cover the entire floor of the room?

Hamad Problems on L.C.M and H.C.F 26/02/2021

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A. 110
B. 124
C. 96
D. 117
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Find the H.C.F of 54/9, 3 9/17 and 36/51?

Hamad Problems on L.C.M and H.C.F 23/02/2021

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A. 17/6
B. 6/153
C. 6
D. 17

The least square number which divides 8, 12 and 18 is________?

Hamad Problems on L.C.M and H.C.F 22/02/2021

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A. 100
B. 121
C. 64
D. 144
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H.C.F of 3240, 3600 and a third number is 36 and their L.C.M is 2⁴ * 3⁵ * 5² * 7². The third number is___________?

Hamad Problems on L.C.M and H.C.F 20/02/2021

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A. 2² * 3⁵ * 7²
B. 2² * 5³ * 7²
C. 2⁵ * 5² * 7²
D. 2³ * 3⁵ * 7²
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The ratio of numbers is 3:4 and their H.C.F is 4. Their L.C.M is__________?

Hamad Problems on L.C.M and H.C.F 06/02/2021

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A. 12
B. 16
C. 24
D. 48
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Least perfect square number, exactly divisible by 21, 36 and 56 is_________?

Hamad Problems on L.C.M and H.C.F 31/12/2020

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A. 3600
B. 504
C. 441
D. 7056

HCF of 3/16, 5/12, 7/8 is__________?

Hamad Problems on L.C.M and H.C.F 29/12/2020

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A. 2/47
B. 3/47
C. 1/48
D. 5/48
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The wheels revolve round a common horizontal axis. They make 15, 20 and 48 revolutions in a minute respectively. Starting with a certain point on the circumference down wards. After what interval of time will they come together in the same position?

Hamad Problems on L.C.M and H.C.F 15/12/2020

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A. 1 min
B. 2 min
C. 3 min
D. None
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