What are the common factor of 42 and 63?

Answer 1

A factor is a divisor - a number that will evenly divide into another number.

One way to determine the common factors and greatest common factor is to find all the factors of the numbers and compare them.

The factors of 42 are 1, 2, 3, 6, 7, 14, 21, and 42.

The factors of 63 are 1, 3, 7, 9, 21, and 63.

The common factors are 1, 3, 7, and 21.

Answer 2

The common factors are: 1, 3, 7, 21.

Answer 3

factor of 42 and 63 is shown below.