The power set of a set is the set of all subsets of the set.
The power set of { 2 , 5 } {\displaystyle \{2,5\}} is { { } , { 2 } , { 5 } , { 2 , 5 } } {\displaystyle \{\{\},\{2\},\{5\},\{2,5\}\}} .
The power set of { 3 , 4 , 10 } {\displaystyle \{3,4,10\}} is { { } , { 3 } , { 4 } , { 10 } , { 3 , 4 } , { 3 , 10 } , { 4 , 10 } , { 3 , 4 , 10 } } {\displaystyle \{\{\},\{3\},\{4\},\{10\},\{3,4\},\{3,10\},\{4,10\},\{3,4,10\}\}}
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