Mathematics

Mathematics, 18.07.2019 18:30, bestielove7425

Let a = {1,3,5,7,9}, b= {3,6,9}, and c= {2,4,6,8}.
which of the following is correct, is answer a or b correct?
a)
(a ? b) ? c = a ? (b ? c)
b)
(a ? b) ? c = (b ? a) ? c

answer

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Let a = {1,3,5,7,9}, b= {3,6,9}, and c= {2,4,6,8}.
which of the following is correct, is answe...

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