Friday, May 14, 2010

Friday Factorial

Can you think of a reason why 30414093201713378043612608166064768844377641568960512078291027000 cannot possibly be the value of 50 factorial, without actually performing the calculation?


  1. When 10,20,30,40,50 are multiplied itself the last five digits will be zero other than this there are five set of 5s and 2s.


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