What is the H.C.F of 25 and 65?
13
3
7
5
As, 25 = 5 × 5 and 65 = 5 × 13. ∴ The H.C.F of 25 and 65 is 5.
d is the HCF of 65 and 117 expressed on the form of 65m + 117n.
Fond the HCF of 65 and 117 and express it in the form 65n + 117n.