0 votes 0 votes What are the values of these sums, where $S = \{1, 3, 5, 7\}?$ $\displaystyle{}\sum_{j\in S}j$ $\displaystyle{}\sum_{j\in S}j^{2}$ $\displaystyle{}\sum_{j\in S}(1/j)$ $\displaystyle{}\sum_{j\in S}1$ Set Theory & Algebra kenneth-rosen discrete-mathematics set-theory&algebra descriptive + – admin asked Apr 20, 2020 admin 154 views answer comment Share Follow See all 0 reply Please log in or register to add a comment.