0 votes 0 votes Prove the first associative law from Table 1 by showing that if $A,B,$ and $C$ are sets, then $A \cup (B \cup C)= (A \cup B) \cup C.$ Set Theory & Algebra kenneth-rosen discrete-mathematics set-theory&algebra + – Pooja Khatri asked Apr 6, 2019 Pooja Khatri 205 views answer comment Share Follow See all 0 reply Please log in or register to add a comment.