Question

Question 1 (a)

Find the common factors of:
20 and 28

Answer 1

A factor of a number is an exact divisor of that number.
Factors of 20 = 1, 2, 4, 5,10, 20
Factors of 28 = 1, 2, 4, 7, 14, 28
Thus, common factors of 20 and 28 = 1, 2, 4