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GATE CS and IT 2015 Paper

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Question : 20

Total: 65

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

I and III only
II and III only
I, II and III only
I, II and IV only

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