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Write down the power set of C = {1, {2}}.

{ϕ, {1}, {{2}}}
{ϕ, {1}, {{2}}, {1, {2}}}
{{1}, {{2}}, {1, {2}}
None of these

Correct Answer: {ϕ, {1}, {{2}}, {1, {2}}}

Explanation:

NA

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