Difference between revisions of "1992 AIME Problems/Problem 2"
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== Problem == | == Problem == | ||
| + | A positive integer is called ascending if, in its decimal representation, there are at least two digits and each digit is less than any digit to its right. How many ascending positive integers are there? | ||
== Solution == | == Solution == | ||
Revision as of 18:10, 26 July 2006
Problem
A positive integer is called ascending if, in its decimal representation, there are at least two digits and each digit is less than any digit to its right. How many ascending positive integers are there?
