Question

What is the greatest common factor of 21, 24 and 27​

Answer 1

3

Explanation:

The factors of 21 are: 1, 3, 7, 21

The factors of 24 are: 1, 2, 3, 4, 6, 8, 12, 24

The factors of 27 are: 1, 3, 9, 27

Then the greatest common factor is 3.

Answer 2

Answer: 3

Explanation:

3 * 7 = 21

2^3 * 3 = 24

3^3 = 27