1 votes 1 votes closed as a duplicate of: GATE CSE 2015 Set 1 | Question: 16 A = {5 , {6}, {7} } let P be the power set of A which of the following is true (1) ∅ ∊ P (2) ∅ ⊆ P (3) {5, {6}} ∊ P (4) {5, {6}} ⊆ P Set Theory & Algebra set-theory&algebra + – Shubhanshu asked Apr 28, 2017 closed Apr 28, 2017 by Samujjal Das Shubhanshu 286 views comment Share Follow See all 0 reply Please log in or register to add a comment.