Multiple choice Which of the following numbers has 8 as the H.C.F.? 84, 21 90, 20 92,18 96, 40 Reveal answer Fill a bubble to check yourself D Correct answer Explanation Factors of 96 = 2 x 2 x 3 x 2 x 2 x 2 Factors of 40 = 2 x 2 x 2 x 5 HCF of 96 & 40 = 2 x 2 x 2 = 8