Find the number of five digit numbers that can be formed using the digits \( 1,2,3,4,5,6,7,8,9 \...

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Find the number of five digit numbers that can be formed using the digits \( 1,2,3,4,5,6,7,8,9 \) in which one digit appears once and two digits appear twice (e.g. 41174 is one such number but 75355
\( P \) is not.).

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