1. Let P(z, y) = "I + y = 0", Q(z, y) = "r+y = 2" and O(r) = "z is an odd mumber", where the domain of x.y is all real numbers, determine the truth values of the following. (a) 3rvyP(1, y) (b) Vrvy((0(z) A¬0(y)) →-Q(1, y)) (c) Vrvy (-Q(z, y)v -P(1,y)).

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