document.write( "Question 535019: if 109 boys play a chess tournament, how many games have to be played so that each boy plays everyone \n" ); document.write( "

Algebra.Com's Answer #351756 by htmentor(1343) $\"\"$ $\"About$

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This is a combination problem in which 91 things are taken 2 at a time
\n" ); document.write( "So the number of games is
\n" ); document.write( "C(91,2) = 91!/(2!89!) = 91*90/2 = 4095 \n" ); document.write( "

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