answersLogoWhite

0

the greatest common factor is 7,

because 21 divided by 7 is 3,

28 divided by 7 is 4

and 56 divided by 7 is 8.

Still curious? Ask our experts.

Chat with our AI personalities

BlakeBlake
As your older brother, I've been where you are—maybe not exactly, but close enough.
Chat with Blake
EzraEzra
Faith is not about having all the answers, but learning to ask the right questions.
Chat with Ezra
FranFran
I've made my fair share of mistakes, and if I can help you avoid a few, I'd sure like to try.
Chat with Fran
More answers

Factors are numbers you can multiply together to get another number.

21: 1, 3, 7, 21

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

The common factors of 21 and 28 are 1 and 7.
1 and 7

User Avatar

Wiki User

8y ago
User Avatar

The common factors of 28 and 21 are: 1 and 7

User Avatar

Wiki User

15y ago
User Avatar

Add your answer:

Earn +20 pts
Q: What are the common factors of 21 and 28?
Write your answer...
Submit
Still have questions?
magnify glass
imp