The least perfect square, which is divisible by each of 21, 36 and 66 is
Choose the correct answer:
A) 213414
B) 213424
C) 213434
D) 213444
E) None of these
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   Option 213444
<result>D</result>
The least perfect square, which is divisible by each of 21, 36 and 66 is