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整數論題目,1!+2!+3!+..... + 100! 除以 2009,求餘數 r

整數論題目,1!+2!+3!+..... + 100! 除以 2009,求餘數 r

1!+2!+3!+..... + 100! = 2009*q + r, 0<= r < 2009,求 r

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