document.write( "Question 87538This question is from textbook Strategies for Problem Solving
\n" ); document.write( ": A computer 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 cmpuer does not lock up? \n" ); document.write( "
Algebra.Com's Answer #63461 by stanbon(75887)\"\" \"About 
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A computer 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 cmpuer does not lock up?
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\n" ); document.write( "20C4 = [20*19*18*17]/[1*2*3*4] = 4845 sets of 4 programs
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\n" ); document.write( "Cheers,
\n" ); document.write( "Stan H.
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