0 votes 0 votes Suppose that $A \times B = \phi$, where $A$ and $B$ are sets. What can you conclude? Set Theory & Algebra kenneth-rosen discrete-mathematics set-theory&algebra + – Pooja Khatri asked Apr 5, 2019 Pooja Khatri 136 views answer comment Share Follow See all 0 reply Please log in or register to add a comment.