document.write( "Question 255633: computer with an old processor locks up if more than 4 application are running. 20 applications stored in program file. how many different sets of 4 can run \n" ); document.write( "

Algebra.Com's Answer #187843 by drk(1908) $\"\"$ $\"About$

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This is a combination problem:
\n" ); document.write( "20c4 = 4845 \n" ); document.write( "

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