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OpenStudy (anonymous):
WILL MEDAL!!! which set is closed under multiplication A. {1, 3 } B. {0, 1, 3} C. {1, 2, 3} D. none of the sets are closed under multiplication
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OpenStudy (kittyloli):
B
OpenStudy (kittyloli):
0 isn't a real number
OpenStudy (kittyloli):
It isn't a whole number either
OpenStudy (kittyloli):
And by real, I mean as far as multiplication, since it turns out to be 0 when you times it with another number
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