let-m-n-denotes-any-two-possitive-relative-prime-integers-then-prove-that-mn-m-n-

Question Number 47036 by 23kpratik last updated on 04/Nov/18

l e t m, n d e n o t e s a n y t w o p o s s i t i v e, r e l a t i v e p r i m e i n t e g e r s, t h e n p r o v e t h a t ϕ (m n) = ϕ (m) \cdot ϕ (n)