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Problems on HCF and LCM - General Aptitude

Q1:

252 can be expressed as a product of primes as:

A 2 x 2 x 3 x 3 x 7

B 2 x 2 x 2 x 3 x 7

C 3 x 3 x 3 x 3 x 7

D 2 x 3 x 3 x 3 x 7

ANS:A - 2 x 2 x 3 x 3 x 7

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