Consider the relations on the set {1, 2, 3, 4}. The matrix corresponding to the relation {(1, 2), (1, 3), (1, 4), (2, 3), (2, 4), (3, 4)} is
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Represent each of these relations on $\{1,2,3,4\}$ with a matrix (with the elements of this set listed in increasing order). a) $\{(1,2),(1,3),(1,4),(2,3),(2,4),(3,4)\}$ b) $\{(1,1),(1,4),(2,2),(3,3),(4,1)\}$ c) $\{(1,2),(1,3),(1,4),(2,1),(2,3),(2,4),(3,1),(3,2)$ (3, $4 ),(4,1),(4,2),(4,3) \}$ d) $\{(2,4),(3,1),(3,2),(3,4)\}$
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