Question: Let U = Z + { 0 } . Let R 1 = { ( x, y ) | x < y } Let R

Let U = Z+ { 0 }. Let R1 = { ( x, y ) | x < y } Let R2 = { ( x, y ) | x > y } Let R3 = { ( x, y ) | x y } Let R4 = { ( x, y ) | x y } Let R5 = { ( x, y ) | x y } Let R6 = { ( x, y ) | x = y } Find: a) R2 R3 b) R2 R4 c) R4 R5 d) R6 R6 e) R1 R6

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