Question

The least positive integer which is a perfect square and also divisible by each of 21 , 36 and 66 is : with Explanation​

Answer 1

For this question FIRST we need to Take LCM,

LCM (21, 36, 66) = 2772.

2772 = 2 x 2 x 3 x 3 x 7 x 11

To make it a perfect square, it must be multiplied

Since there is only one 7 and 11

by 7 x 11.

So, required number = 2772 x 7 x 11 = 213444

THEREFORE ANS:- 213444