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

Problems on H.C.F and L.C.M
The least number which when add 3 to it, completely divided 8, 12 and 18 is?

69
70
68
71

ANSWER DOWNLOAD EXAMIANS APP

Problems on H.C.F and L.C.M
Find the greatest number which on dividing 1661 and 2045, leaves a reminder of 10 and 13 respectively

127
129
131
133

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

In this type of question, its obvious we need to calculate the HCF, trick isHCF of (1661 - 10) and (2045 -13)= HCF (1651, 2032) = 127

Problems on H.C.F and L.C.M
Three number are in the ratio of 3 : 4 : 5 and their L.C.M. is 2400. Their H.C.F. is:

120
200
80
40

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

 Let the numbers be 3x, 4x and 5x.Then, their L.C.M. = 60x.So, 60x = 2400 or x = 40. The numbers are (3 x 40), (4 x 40) and (5 x 40).Hence, required H.C.F. = 40.

Problems on H.C.F and L.C.M
Three numbers are in the ratio 1 : 2 : 3 and their H.C.F is 12. The numbers are

5, 10, 15
10, 20, 30
12, 24, 36
4, 8, 12

ANSWER DOWNLOAD EXAMIANS APP

Problems on H.C.F and L.C.M
What is the smallest number which when diminished by 8, is divisible by 9, 6, 12 and 18?

45
50
60
44

ANSWER DOWNLOAD EXAMIANS APP

Problems on H.C.F and L.C.M
Least perfect square number, exactly divisible by 21, 36 and 56 is?

441
7056
3600
504

ANSWER DOWNLOAD EXAMIANS APP
MORE MCQ ON Problems on H.C.F and L.C.M

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