Question

Write all the subsets of the set A = {-1, 0, 1, 2}

Answer 1

the subsets of A are
2 power n = 2 power 4.
2 power 4 = 16.
{ } , {-1, 0, 1, 2} , {-1} , {0} , {1} , {2} , {-1, 0} , {1, 0} ,
{1, 2} , {0, 2} , {-1, 1} , {-1, 2} , {-1, 0, 1} , {-1, 0, 2} ,
{1, 0, 2} , {-1, 1, 2} .

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