### Home > CC1 > Chapter 3 > Lesson 3.2.4 > Problem 3-130

3-130.

Find the greatest common factor and the least common multiple of each of the following sets of numbers.

and

is a prime number, so its only factor other than itself is . Their greatest common factor is

. Can you find their least common multiple?

, and

To find the least common multiple, try finding multiples of

and checking

whether they are also multiples ofand . The least common multiple is

. Try finding the greatest common factor.

and

is a factor of both of these numbers.