Difference between revisions of "1988 USAMO Problems/Problem 1"
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Revision as of 14:49, 15 May 2012
Problem
The repeating decimal , where and are relatively prime integers, and there is at least one decimal before the repeating part. Show that is divisble by 2 or 5 (or both). (For example, , and 88 is divisible by 2.)
Solution
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See Also
1988 USAMO (Problems • Resources) | ||
Preceded by First Question |
Followed by Problem 2 | |
1 • 2 • 3 • 4 • 5 | ||
All USAMO Problems and Solutions |