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If \(x\) is a positive integer, is \(x+y\) even?
(1) \(K^x\cdot K^y =1.\)
(2) \(K\) is not equal to \(1.\)
Answer: C
Source: Manhattan GMAT
(1) \(K^x\cdot K^y =1.\)
(2) \(K\) is not equal to \(1.\)
Answer: C
Source: Manhattan GMAT
