Question

Smallest number which is divisible by 20,36,45

Answer 1

The smallest number divisible by 20 , 36 , and 45 is 180.

We have to find the LCM:   
20 = 4 * 5
36 = 4 * 9
45 = 9 * 5
LCM = 4 * 5 * 9 = 180

Answer 2

Find the LCM of 20,36 and 45

i.e LCM - 2 x 2 x 3 x 3 x 5 = 180

So 180 is the required number.

Hope This Helps You!