Aptitude | Arithmetic Aptitude 2 | Question 5
The least perfect square, which is divisible by each of 15, 20 and 36 is:
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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