# The least perfect square, which is divisible by each of 21, 36 and 66 is ?

The least perfect square, which is divisible by each of 21, 36 and 66 is ?

A. 13414

B. 213424

C. 213434

D. 213444

**Answer : **D. 213444

## Explanation:

L.C.M. of 21, 36, 66 = 2772

Now, 2772 = 2 x 2 x 3 x 3 x 7 x 11

To make it a perfect square, it must be multiplied by 7 x 11.

So, required number = 2 x 2 x 3 x 3 x 7 x 7 x 11 x 11 = 213444