A sum of money is rounded off to the nearest rupee, if \( \left(\frac{m}{n}\right)^{2} \) be the...

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A sum of money is rounded off to the nearest rupee, if \( \left(\frac{m}{n}\right)^{2} \) be the probability that the round off error is atleast
\( \mathrm{P} \) ten paise, where \( m \) and \( n \) are positive relative primes, then the value of \( (n-m) \) is
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