Q.4 Define Power set. And Find power set of X = { ϕ,1, {b}}please don't spam give me a correct answer

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Q.4 Define Power set. And Find power set of X = { ϕ,1, {b}}

please don't spam
give me a correct answer

Step-by-step explanation:

Power set of A, P(A) = {{}, {1}, {2}, {3}, {1, 2}, {2, 3}, {1, 3}, {1, 2, 3}}

So you can see there are 8 elements of P(A).