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

252 can be expressed as a product of primes as_______________?

Hamad Problems on L.C.M and H.C.F 26/11/2021

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A. 2 * 2 * 3 * 3 * 7
B. 2 * 2 * 2 * 3 * 7
C. 3 * 3 * 3 * 3 * 7
D. 2 * 3 * 3 * 3 * 7

Product of two co-prime numbers is 117. Their L.C.M should be__________?

Hamad Problems on L.C.M and H.C.F 23/11/2021

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A. 1
B. 117
C. equal to their H.C.F
D. Cannot be calculated
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The H.C.F and L.C.M of two numbers are 84 and 21 respectively. If the ratio of the two numbers is 1:4, then the larger of the two numbers is____________?

Hamad Problems on L.C.M and H.C.F 19/11/2021

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A. 12
B. 48
C. 84
D. 108
(more…)

The least number of four digits which is divisible by 15, 25, 40 and 75 is_________?

Hamad Problems on L.C.M and H.C.F 03/11/2021

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A. 9000
B. 9400
C. 9600
D. 9800
(more…)

LCM of 455, 117, 338 is________?

Hamad Problems on L.C.M and H.C.F 03/11/2021

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A. 10670
B. 106470
C. 104670
D. 107470

An officer was appointed on maximum daily wages on contract money of Rs. 4956. But on being absent for some days, he was paid only Rs. 3894. For how many days was he absent?

Hamad Problems on L.C.M and H.C.F 03/11/2021

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A. 3
B. 4
C. 5
D. 6
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The L.C.M. of two numbers is 48. The numbers are in the ratio 2 : 3. Then sum of the number is_________?

Hamad Problems on L.C.M and H.C.F 29/10/2021

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A. 28
B. 32
C. 40
D. 64

The least number which when divided by 16, 18 and 21, leave the remainder 3, 5 and 8 respectively is___________?

Hamad Problems on L.C.M and H.C.F 23/10/2021

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A. 982
B. 893
C. 1024
D. 995

There are four prime numbers written in ascending order of magnitude. The product of the first three is 7429 and of the last three is 12673. Find the fourth number?

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

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A. 17
B. 29
C. 23
D. 31
(more…)

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