Question:
The power set of set A = {1, 2} is ____________.
Solution:
Let A = {1, 2}
Then number of subject of A are 22 = 4
i.e. ϕ, {1}, {2}, {1, 2}
∴ P(A) = {{1}, {2}, ϕ, {1, 2}}
i.e P(A) = {ϕ, {1}, {2}, {1, 2}}
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