Find the common factors of:
(a) 4, 8 and 12 (b) 5, 15 and 25
(a) 4, 8 and 12
Factors of 4 = 1, 2 and 4
Factors of 8 = 1, 2, 4 and 8
Factors of 12 = 1, 2, 3, 4, 6 and 12
Comman factors = 1, 2, and 4
(b) 5, 15 and 25
Factors of 5 = 1, 5
Factors of 15 = 1, 3, 5 and 15
Factors of 25 = 1, 5 and 25
Common factors = 1 and 5.