Question

The L.C.M. of two numbers is 5040 and their H.C.F is 12.If one of the number is 144, then find the second number.

Answer 1

Product of two numbers = Product of their HCF and LCM

                                         = 5040 * 12/144

                                         = 420.

Answer 2

Hey there!

Let the second no. be x

We know,
1st no. × 2nd no. = HCF × LCM
144 × x = 5040 × 12
x = 5040×12/144
x = 420

Hence, the second no. is x= 420.