What is the Greatest Common Factor of 42 35 and 28?

Answer 1

Greatest common factor= 7

The greatest common factor is the factor that all these numbers have in common. It helps to make a list of all the number's factors.

28- 2, 2, 7

35- 5, 7

42- 2, 3, 7

All of these numbers have 7 as a factor,

therfore 7 is the greatest common factor

Answer 2

The GCF is 7.

Answer 3

Factors of 35: 1, 5, 7, 35

Factors of 42: 1, 2, 3, 6, 7, 14, 21, 42

Factors of 28: 1, 2, 4, 7, 14, 28

GCF (35, 42, 28) = 7

Answer 4

The GCF of 28, 42, and 35 is 7.