Difference between revisions of "2005 AIME I Problems/Problem 3"
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== Problem == | == Problem == | ||
| − | How many positive | + | How many [[positive integer]]s have exactly three [[proper divisor]]s, each of which is less than 50? |
== Solution == | == Solution == | ||
| − | + | {{solution}} | |
| − | |||
== See also == | == See also == | ||
| + | * [[2005 AIME I Problems/Problem 2 | Previous problem]] | ||
| + | * [[2005 AIME I Problems/Problem 4 | Next problem]] | ||
* [[2005 AIME I Problems]] | * [[2005 AIME I Problems]] | ||
| + | |||
| + | [[Category:Introductory Number Theory Problems]] | ||
Revision as of 17:05, 29 October 2006
Problem
How many positive integers have exactly three proper divisors, each of which is less than 50?
Solution
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