Difference between revisions of "2003 AIME I Problems/Problem 9"
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== Problem == | == Problem == | ||
| + | An integer between 1000 and 9999, inclusive, is called balanced if the sum of its two leftmost digits equals the sum of its two rightmost digits. How many balanced integers are there? | ||
== Solution == | == Solution == | ||
Revision as of 19:09, 6 August 2006
Problem
An integer between 1000 and 9999, inclusive, is called balanced if the sum of its two leftmost digits equals the sum of its two rightmost digits. How many balanced integers are there?
