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

Problems on H.C.F and L.C.M
252 can be expressed as a product of primes as:

2 x 2 x 3 x 3 x 7
3 x 3 x 3 x 3 x 7
2 x 3 x 3 x 3 x 7
2 x 2 x 2 x 3 x 7

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

Clearly, 252 = 2 x 2 x 3 x 3 x 7.

Problems on H.C.F and L.C.M
The least number which when divided by 5,6,7 And 8 leaves a remainder 3, but when divided by 9 leaves no remainder, is :

2523
1677
1683
3363

ANSWER DOWNLOAD EXAMIANS APP

Problems on H.C.F and L.C.M
The least number of four digits which is divisible by 15, 25, 40 and 75 is:

9400
9600
9800
9000

ANSWER DOWNLOAD EXAMIANS APP

Problems on H.C.F and L.C.M
The greatest number which can divide 1356,1868 and 2764 leaving the same remainder 12 in each case, is :

124
124
260
64

ANSWER DOWNLOAD EXAMIANS APP

Problems on H.C.F and L.C.M
The product of two digits number is 2160 and their HCF is 12. The numbers are:

(96,25)
(36,60)
(72,30)
(12,180)

ANSWER DOWNLOAD EXAMIANS APP

Problems on H.C.F and L.C.M
Find the least number which when divided by 5,6,7, and 8 leaves a remainder 3, but when divided by 9 leaves no remainder .

2683
4683
1683
3683

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

L.C.M. of 5,6,7,8 = 840.    Required number is of the form 840k + 3     Least value of k for which (840k + 3) is divisible by 9 is k = 2. Required number = (840 X 2 + 3)=1683

MORE MCQ ON Problems on H.C.F and L.C.M

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