What is the least perfect square which is divisible by 24 30 and 60?

Step 1: LCM of 24, 30 and 60 = 120

so 120 is the least no which is divisible by all 24, 30 and 60

Step 2: factors of 120 will be 2^3 * 3 * 5

so the least perfect square, which is divisible by 24, 30 and 60 will be

(2^3 * 3 * 5) x (2 * 3 * 5) = 3600

3600