Find the power set of A = {{a, b}, c}.

{ϕ, {a, b}, {c}}
{A, {a, b}, {c}}
{ϕ, A, {a, b}, {c}}
None of these

Correct Answer: {ϕ, A, {a, b}, {c}}

Explanation:

Let, A = {{a, b}, c}. To determine P(A) : Since A contains two elements {a, b}, c, P(A) will contain 2² = 4 elements.
The elements of P(A) are Φ, A, {a, b}, {c}.

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