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Question

Let A = {a, b}. Then, the power set of A is given by P(A) = ___.

A
{{a},{b}}
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B
{{a}, {b}, {a, b} }
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C
{a, b}
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D
{{}, {a}, {b}, {a, b} }
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Solution

The correct option is D {{}, {a}, {b}, {a, b} }
The set of all the subsets of a set is called the power set of the set.

Given the set {a, b}.
The subsets of this set are {}, {a}, {b} and {a, b}.
Thus, the powerset of the set are {{}, {a}, {b}, {a, b}}.

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