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.
(In reply to
Proof :) by Gamer)
Gamer, I want to understand your proof. You make a mention of x and y without defining them. Did I miss an earlier partial proof?
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Posted by Bryan
on 2003-04-26 17:29:12 |
re: Proof :)
