Aptitude | Arithmetic Aptitude 2 | Question 5

The least perfect square, which is divisible by each of 15, 20 and 36 is:

(A) 1200
(B) 800
(C) 1000
(D) 900


Answer: (D)

Explanation:

LCM of 15, 20 and 36 is 180

Now 180 = 3 x 3 x 2 x 2 x 5

To make it perfect square, it must
be multiplied from 5.

So required no. = 32 x 22 x 52 = 900


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