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Non - Zero Digit (Posted on 2003-12-21) Difficulty: 4 of 5
What is the last non - zero digit in (20!)!? (That is, factorial of 20 factorial).

See The Solution Submitted by Ravi Raja    
Rating: 2.6667 (6 votes)

Comments: ( You must be logged in to post comments.)
  Subject Author Date
Another ApproachNK2004-01-23 18:19:54
re(3): simple solutionTristan2003-12-23 12:53:20
re: Seems SimpleCharlie2003-12-22 14:25:13
Seems Simpledon scheuer2003-12-22 13:34:44
re(2): simple solutionCharlie2003-12-22 08:46:01
re: simple solutionCharlie2003-12-22 08:43:51
maybe not everyone...Eric2003-12-22 06:22:29
Solutionsimple solutionTristan2003-12-22 01:51:56
Some ThoughtsAn interesting variation on this problemPenny2003-12-21 20:03:38
SolutionsolutionCharlie2003-12-21 17:11:33
Hints/TipsFOTASatanClaus2003-12-21 14:55:07
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