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Non - Zero Digit II (Posted on 2012-02-05) Difficulty: 4 of 5
Reading from left to right, what is the last non - zero digit in ((20!)!)!? (That is, the factorial of factorial of 20 factorial).

No Solution Yet Submitted by K Sengupta    
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  Subject Author Date
re: No SubjectJer2012-02-07 12:29:20
No SubjectBenny2012-02-07 04:52:18
My answer rationalizedSteve Herman2012-02-06 17:54:52
Some ThoughtsI agree with JerDej Mar2012-02-06 16:42:13
QuestionThe previous two answersJer2012-02-06 13:20:14
No SubjectBenny2012-02-05 16:15:42
Some ThoughtsSpoilerSteve Herman2012-02-05 14:33:04
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