Question

4. If the HCF and LCM of two numbers are 15 and 90, find the product of the
numbers.​

Answer 1

If the HCF of the two numbers is 15 then the two numbers are 15*a and 15*b where ‘a’ and ‘b’ are integers.

LCM is a least value of the number divisible by both 15*a and 15*b.

So if you are expecting to know the smallest value for the LCM then a=1 and b= 2 could be a possible solution.This gives the LCM of 15 and 30 as 30.