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Given that \(x\) and \(y\) are positive integers, what is the units digit of \((5*x*y)^{289}\)?

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by BTGmoderatorLU » Sat Jul 19, 2025 12:44 pm

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Given that \(x\) and \(y\) are positive integers, what is the units digit of \((5*x*y)^{289}\)?

1) \(x\) is odd

2) \(y\) is even

The OA is B
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Source: — Data Sufficiency |