document.write( "Question 372166: A computer with an old processor locks up if more than 4 applications are running simutaniously. 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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Algebra.Com's Answer #265103 by solver91311(24713) $\"\"$ $\"About$

You can put this solution on YOUR website!
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\n" ); document.write( "\n" ); document.write( "How many ways can you select 4 things out of 20 things where order doesn't matter?\r
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\n" ); document.write( "\n" ); document.write( "The arithmetic is all yours.\r
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\n" ); document.write( "\n" ); document.write( "John
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\n" ); document.write( "My calculator said it, I believe it, that settles it
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