The least perfect square, which is divisible by each of 21, 36 and 66 is:	Options
A) 213444  B) 214344  C) 214434  D) 231444  E) 23444
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 = 22 x 32 x 72 x 112 = 213444   213444nswer: Option 213444
<result>A</result>
The least perfect square, which is divisible by each of 21, 36 and 66 is: