0 votes 0 votes Prove that if $n$ is a positive integer, then $n$ is odd if and only if $5n+6$ is odd. Mathematical Logic kenneth-rosen discrete-mathematics mathematical-logic propositional-logic + – Pooja Khatri asked Apr 4, 2019 Pooja Khatri 178 views answer comment Share Follow See all 0 reply Please log in or register to add a comment.