SOLUTION: What are all the subsets of the set {-1,9}?

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Question 927417: What are all the subsets of the set {-1,9}?

Answer by stanbon(75887) About Me  (Show Source):
You can put this solution on YOUR website!
What are all the subsets of the set {-1,9}?
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No elements:: null set
One element:: {-1} and {9}
Two elements: {-1,9}
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Note:: A set with "n" elements always has 2^n subsets.
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Cheers,
Stan H.
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