N1D7TNp25

Answer to Problem 25:

1.

The GCF is the product of all the prime factors 54 and 60 share. 

        2 x 3 = 6.

The LCM is the product of all the prime factors 54 and 60 share and don’t share.  2 x 2 x 3 x 3 x 3 x 5 = 540.