0 votes 0 votes Deepalitrapti asked Oct 24, 2018 Deepalitrapti 229 views answer comment Share Follow See all 2 Comments See all 2 2 Comments reply BASANT KUMAR commented Oct 24, 2018 reply Follow Share First one is cartesian product of $\phi$ and a set its output will be $\phi$ and second one is power of $\phi$ with 2 it will be $\phi$ and third one is powerset of (2,3,5). 0 votes 0 votes ShivangiChauhan commented Jul 3, 2021 reply Follow Share What is the difference between ${\phi } and \left \{ {\phi } \right \}$ ? 0 votes 0 votes Please log in or register to add a comment.