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[Post New]2 Mar 2008 21:49:50 IST
    Subject: Re:pl show d concept
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sboosy (3063)

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Olaaa!! Perrrfect answer. 539  [723 rates]
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1! + 2! + 3! + 4! + ....
= 1+2+6+24 +120+720 +all terms ending with 0's
so unit digit in sum is same as in
1+2+6+24 which is 3
 this reply: 5 points  (with 1 Olaaa!! Perrrfect answer.   in 1 votes )   [?]
 
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