0 votes 0 votes Give an example of a function from $N$ to $N$ that is one-to-one but not onto. onto but not one-to-one. both onto and one-to-one (but different from the identity function). neither one-to-one nor onto. Set Theory & Algebra kenneth-rosen discrete-mathematics set-theory&algebra + – Pooja Khatri asked Apr 9, 2019 Pooja Khatri 158 views answer comment Share Follow See all 0 reply Please log in or register to add a comment.