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Task 3.2 (Written, 9 points). Are the following statements true (provable) or false (have a counterexample)? Explain briefly (1-2 sentences). a) Va e Z.Sy e Z.r = y* 2 b) 3r E Z.-(a 2.30 e Z.a >1/b>11*b=r) c) Vr e Z.Sy e Z.y=r*2