If the LCM of a and 18 is 36 and the HCF of a and 18 is 2, then a =

Question

Philoid · Accepted Answer

We know that for any two positive integers a and b, HCF (a, b) × LCM (a, b) = a × b.

Here LCM = 36, HCF = 2 and b = 18

Then, 2 × 36 = a × 18

a = (2 × 36) / 18

a = 4