GATE Computer Science (CS) 2015 Shift 1 Solved Paper

Question : 20 of 65

Marks: +1, -0

For a set A, the power set of A is denoted by 2^A. If A = {5, {6}, {7}}, which of the following options are TRUE?
I. Φ ϵ 2^A
II. Φ ⊆ 2^A
III. {5, {6}} ∈ 2^A
IV. {5, {6}} ⊆ 2^A