document.write( "Question 347881: 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 #248769 by jim_thompson5910(35256)\"\" \"About 
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There are 20 choices for the first slot, 19 for the second, 18 for the third, and 17 for the fourth. Multiply them out to get\r
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\n" ); document.write( "\n" ); document.write( "20*19*18*17 = 116280\r
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\n" ); document.write( "\n" ); document.write( "So there are 116280 different ways to run 4 programs selected from a pool of 20 programs.\r
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\n" ); document.write( "\n" ); document.write( "If you need more help, email me at jim_thompson5910@hotmail.com\r
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\n" ); document.write( "\n" ); document.write( "Also, feel free to check out my tutoring website\r
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\n" ); document.write( "\n" ); document.write( "Jim \n" ); document.write( "
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