Question

Compute the H.C.F of the pairs of numbers and sort the pairs in ascending order of their H.C.F.

• A. 3,5
• B. 6,8
• C. 3,9
• D. 10,15

Answer 1

H.C.F of 3, 5
Factors of 3 = 1, 3
Factors of 5 = 1, 5
H.C.F = 1

H.C.F of 6, 8
Factors of 6 = 1, 2, 3, 6
Factors of 8 = 1, 2, 4, 8
H.C.F = 2

H.C.F of 3, 9
Factors of 3 = 1, 3
Factors of 9 = 1, 3, 9
H.C.F = 3

H.C.F of 10, 15
Factors of 10 = 1, 2, 5, 10
Factors of 15 = 1, 3, 5, 15
H.C.F = 5