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Four-Digit Number (Posted on 2003-04-26) Difficulty: 4 of 5
Find a four-digit number with four different digits, that is equal to the number formed by its digits in descending order minus the number formed by its digits in ascending order.

See The Solution Submitted by Ravi Raja    
Rating: 3.1667 (6 votes)

Comments: ( You must be logged in to post comments.)
  Subject Author Date
QuestionhelpBilly Bob2004-03-19 16:50:05
re(2): divisible by 9 proof :)abc2003-09-12 20:38:23
re: divisible by 9 proof :)Gamer2003-09-12 17:36:20
divisible by 9abc2003-09-12 09:47:03
Some Thoughtsre(3): Interesting!abc2003-09-11 18:12:04
More about ProofGamer2003-04-28 01:39:25
re(2): Interesting!Gamer2003-04-28 01:37:10
Some Thoughtsre: Interesting!Charlie2003-04-27 04:06:07
Hints/TipsInteresting!Bryan2003-04-26 17:36:06
re: Proof :)Bryan2003-04-26 17:29:12
SolutionProof :)Gamer2003-04-26 11:26:20
re: My solution -- exhausive search uniqueness shownCharlie2003-04-26 09:17:17
SolutionMy solutionGamer2003-04-26 05:50:01
Rewording Of The ProblemRavi Raja2003-04-26 04:34:43
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