Question

what is the smallest perfect square that can be divided by15&21

Answer 1

Hey

Here is your answer,

At first find the lcm of 15 and 21

i.e. 15 = 5x3

21 = 7x3

LCM = 3x5x7

Here no number is repeated so their pair 3x5x7

( 3^2)x(5^2)x(7^2)=105^2= 11025 is the required smallest number that is divisible by 15 and 21.

Hope it helps you!