Is 7 the greatest common factor of 21 and 35 and why?

Answer 1

The factors of 21 are:

1, 3, 7, 21

The factors of 35 are:

1, 5, 7, 35

The common factors are:

1, 7

The Greatest Common Factor:

GCF = 7

Answer 2

21 and 35 are both in the 7 timetable, so 7 is a common factor.
Because 7 can divide into both 21 and 35 evenly.

Answer 3

7 is the greatest common factor of 21 and 35.

Answer 4

Yes.

Answer 5

True

Answer 6

Yes