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OpenStudy (anonymous):
If P = {positive integers} and subset T = {positive integers divisible by 3}, what is T'? A {1, 2, 4, 5, 7, 8, 10, 11, 13, 14, …} B {3, 6, 9, 12, …} C {1, 2, 3, 4, …} D { }
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OpenStudy (kinggeorge):
What does T' mean?
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