What is the greatest common factor of 21 and 28
The factors of 21 are 1, 3, 7, and 21.
The factors of 28 are 1, 2, 4, 7, 14, and 28.
The greatest common factor of 21 and 28 is 7, as it is the largest factor that both numbers share.
The factors of 28 are 1, 2, 4, 7, 14, and 28.
The greatest common factor of 21 and 28 is 7, as it is the largest factor that both numbers share.