If \(m\) and \(n\) are positive integers and \(r\) is the remained when \(5(10^n) + m\) is divided by \(3,\) what is the

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If \(m\) and \(n\) are positive integers and \(r\) is the remained when \(5(10^n) + m\) is divided by \(3,\) what is the value of \(r?\)

1) \(n=10\)
2) \(m=1\)

Answer: B

Source: GMAT Prep
Source: — Data Sufficiency |