The least perfect square divisible by each of the numbers 21, 36, and 66 is:
A. 213444
B. 214344
C. 214434
D. 231444
Answer:A
The least perfect square divisible by each of the numbers 21, 36, and 66 is:
A. 213444 B. 214344 C. 214434 D. 231444
Explanation: 21, 36, 66 = 2772 L.C.M.2 × 2 x 3 x 3 x 7 x 11 = 2772.It must be multiplied by 7 x 11 to become a complete square.As a result, the necessary number is 22 x 32 x 72 x 112 = 213444.