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OpenStudy (anonymous):
What are all the subsets for the set {–1,9}? & can you explain why.
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OpenStudy (amistre64):
how many sets of nothing are there?
OpenStudy (amistre64):
also, how many sets of 1 element are there? how many sets of 2 element are there?
OpenStudy (anonymous):
?
OpenStudy (amistre64):
you will have to be more specific about what it is you dont understand from my explanation. Personally, I thought it was quite succinct
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