Difference between revisions of "1995 AIME Problems/Problem 11"

 
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== Problem ==
 
== Problem ==
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A right rectangular prism <math>\displaystyle P_{}</math> (i.e., a rectangular parallelpiped) has sides of integral length <math>\displaystyle a, b, c,</math> with <math>\displaystyle a\le b\le c.</math>  A plane parallel to one of the faces of <math>\displaystyle P_{}</math> cuts <math>\displaystyle P_{}</math> into two prisms, one of which is similar to <math>\displaystyle P_{},</math> and both of which have nonzero volume.  Given that <math>\displaystyle b=1995,</math> for how many ordered triples <math>\displaystyle (a, b, c)</math> does such a plane exist?
  
 
== Solution ==
 
== Solution ==
  
 
== See also ==
 
== See also ==
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* [[1995_AIME_Problems/Problem_10|Previous Problem]]
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* [[1995_AIME_Problems/Problem_12|Next Problem]]
 
* [[1995 AIME Problems]]
 
* [[1995 AIME Problems]]

Revision as of 00:25, 22 January 2007

Problem

A right rectangular prism $\displaystyle P_{}$ (i.e., a rectangular parallelpiped) has sides of integral length $\displaystyle a, b, c,$ with $\displaystyle a\le b\le c.$ A plane parallel to one of the faces of $\displaystyle P_{}$ cuts $\displaystyle P_{}$ into two prisms, one of which is similar to $\displaystyle P_{},$ and both of which have nonzero volume. Given that $\displaystyle b=1995,$ for how many ordered triples $\displaystyle (a, b, c)$ does such a plane exist?

Solution

See also