Question

Using the common factor method, find the H.C.F. of 27 and 75

Answer 1

F₂₇ = 1, 3, 9, 27
F₇₅ = 1, 3, 5, 15, 25, 75
Common factors between 27 and 75 = 1, 3
H.C.F. of 27 and 75 = 3