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Grade 8 - Mathematics
4.41 Proof of A Ac = U

If U = {1,2,3,4,5,6} and A = {3,5,6}, find Ac and Prove that A Ac = U.

Ac is the set of elements that are in U and not in A.
Ac = {1,2,4}
Therefore, A Ac = {3,5,6} {1,2,4}
A Ac = {1,2,3,4,5,6}
Therefore, A Ac = U.

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