What is the greatest common factor of 22 and 55?

Answer 1

The factors of 22 are 1, 2, 11, and 22.

The factors of 55 are 1, 5, 11, and 55.

The common factors are 1 and 11. Therefore, the greatest common factor is 11.

The greatest common factor can also be find by determining the prime factors and multiplying the common prime factors together.

The prime factors of 22 are 2 and 11.

The prime factors of 55 are 5 and 11.

The common prime factors are a single 11, so the greatest common factor is 11.