1.

If A = {5, 6, 7}, find P(A).

Answer»

A = {5, 6, 7} 

We have to find P(A) which is power set of A 

The power set of set A is collection of all possible subsets of A 

The possible subsets of A are {ϕ}, {5}, {6}, {7}, {5,6}, {5,7}, {6, 7}, {5, 6, 7} 

Hence the power set P(A) will be 

P(A) = {{ϕ}, {5}, {6}, {7}, {5,6}, {5,7}, {6, 7}, {5, 6, 7}}



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