question_answer

The least number which when decreased by 7 is exactly divisible by 12, 16, 18, 21 and 28 is

A)  1012                     

B)              1008

C)  1015                     

D)              1022

Correct Answer: C

Solution :

    LCM \[=2\times 7\times 3\times 2\times 4\times 3=1008\] Required number = 1008 + 7 = 1015.