Question

Hcf of 3 numbers is 6 and lcm is 630.If two numbers be 18 and 42,then 3rd number will be?

Answer 1

As H.C.F = 6

Hence, the unknown number should a multiple of 6.

Let, the number is = 6x

So, the three number is = 18,42,6x

L.C.M of these numbers = 126x

Hence, 126x = 630

Or, x = 5  

So the number is 30

HOPE IT HELPS!!!

PLS MARK IT AS THE BRAINLIEST