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Problems on HCF and LCM - General Aptitude

Q1:

The least number which should be added to 2497 so that the sum is exactly divisible by 5, 6, 4 and 3 is:

A 3

B 13

C 23

D 33

ANS:C - 23

L.C.M. of 5, 6, 4 and 3 = 60. On dividing 2497 by 60, the remainder is 37.  Number to be added = (60 - 37) = 23.