Question

find the smallest square number that is divisible by 8,15 and20

Answer 1

so first find the lcm of 8 15 20

Answer 2

Since 4 is a perfect square and 30 is not, this means you need to multiply120 by 30 to get the smallest perfect square divisible by 8, 15 and 20. Thus the smallest square number divisible by 8, 15 and 20 is 3600.