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Given that \(x\) and \(y\) are positive integers, what is the units digit of \((5xy)^{289}?\)
(1) \(x\) is odd.
(2) \(y\) is even.
Answer: B
Source: Veritas Prep
(1) \(x\) is odd.
(2) \(y\) is even.
Answer: B
Source: Veritas Prep
