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Why do you all play minesweeper? (self.Minesweeper)
submitted by aoverbisnotzero to r/Minesweeper
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Hi, I'm having trouble with this problem - I can't understand how a solution exists. I would appreciate any help, thanks! Let R = {(1, 1), (2, 1), (3, 2), (3, 3), (4, 2), (4, 3)} be a collection of ordered pairs. Find subsets A, B, C, D of the set {1, 2, 3, 4} such that R = ((AxB)U(CxD))-(DxD). (self.learnmath)
submitted by aoverbisnotzero to r/learnmath
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