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