Question

find the least square number exactly divisible by 8,12,15and30

Answer 1

As 2,3,5 are not in pairs, we need to multiply the LCM with 2 * 3 * 5 = 30.
i.e. 120 * 30.
So,
least perfect square number which is divisible by each of numbers 8, 12, 15, and 20.