document.write( "Question 251177: A computer with an old processor locks up if more than 4 applications are running simultaneously. If the owner has 20 applications stored in his program file. How many different sets of 4 can he run, so that his computer does not lock up. \n" ); document.write( "
Algebra.Com's Answer #182911 by stanbon(75887)\"\" \"About 
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A computer with an old processor locks up if more than 4 applications are running simultaneously. If the owner has 20 applications stored in his program file. How many different sets of 4 can he run, so that his computer does not lock up.
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\n" ); document.write( "20C4 = 4845
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\n" ); document.write( "Cheers,
\n" ); document.write( "Stan H.
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