Question

What is power set
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Answer 1

A set of all the subsets of a set

Answer 2

The set which contains all the subsets of given sets is called power set of a given set.The power set A is denoted by P{A}.Example: A={1,2},then its power sets are {∅),{1},{2},{1,2}.If the number of elements in a set is m,then the number of subsets is 2^m