### Home > MC1 > Chapter 7 > Lesson 7.2.3 > Problem 7-70

7-70.

Find the least common multiple and the greatest common factor of the following pairs of numbers. In other words, find the smallest number that is a multiple of both of the numbers in the pair.

and Use the Lesson 7.2.2 Math Notes box to help you with these problems.

LCM is

. GCF is .

and Again, refer to the Math Notes box.

is a prime number, which means its only factors are 1 and itself. and Refer to the Math Notes box.

LCM is

. Can you find the greatest common factor?