0 votes 0 votes What is the cardinality of each of these sets? $\phi$ {$\phi$} {$\phi$,{$\phi$}} {$\phi$, {$\phi$},{$\phi$, {$\phi$}}} Set Theory & Algebra kenneth-rosen discrete-mathematics set-theory&algebra + – Pooja Khatri asked Apr 5, 2019 Pooja Khatri 199 views answer comment Share Follow See all 0 reply Please log in or register to add a comment.