GATE 2015 · Session-1
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. ∅ ∈ 2^A
II. ∅ ⊆ 2^A
III. {5, {6}} ∈ 2^A
IV. {5, {6}} ⊆ 2^A
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