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Sum Of The Digits (Posted on 2004-01-27) Difficulty: 3 of 5
Find sum of digits of:(1999)^1999.
[The final answer should be a single digit number, for example, (2)^16 = 65536 and the sum of its digits will be given by (6 + 5 + 5 + 3 + 6 = 25, which again will be reduced to 2 + 5 = 7].

See The Solution Submitted by Ravi Raja    
Rating: 2.1667 (6 votes)

Comments: ( Back to comment list | You must be logged in to post comments.)
re(3): super easy | Comment 7 of 13 |
(In reply to re(2): super easy by Richard)

Uh, yes... thanks for the link... my point was that Ady didn't justify the argument... just made a jump to a conclusion. (I wasn't arguing the conclusion ;-).

When one submits a solution.... BEST, he should explain the reasoning behind it... or at least provide a link to justify the conclusion.

- SK
  Posted by SilverKnight on 2004-01-27 12:19:08

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