The set contains 1 element:
{-9}
There are 2 subsets (with and without -9):
{} and {-9}
But for a proper subset, it can't contain the full set itself.
There is 1 proper subset:
{}
Answer:
a. 2
b. 1
????????????????????
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The set contains 1 element:
{-9}
There are 2 subsets (with and without -9):
{} and {-9}
But for a proper subset, it can't contain the full set itself.
There is 1 proper subset:
{}
Answer:
a. 2
b. 1
????????????????????