What is the least perfect square, which is divisible by each of 21, 36 – InterviewSolution

1.

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

Answer»

Answer:

LCM of 21, 36, 66 is 3^2, 2^2, 7, 11. So the SMALLEST perfect square should be 3^2 x 2^2 x 7^2 x 11^2 = 213444.

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