document.write( "Question 1185709: How many ways can you choose seven people from a group of twenty? \n" ); document.write( "

Algebra.Com's Answer #816542 by math_helper(2461) $\"\"$ $\"About$

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document.write( "C(20,7) = 20!/((20-7)!*7!) = 20!/(13!*7!)\r
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document.write( "= (20*19*18*17*16*15*14)/(7*6*5*4*3*2*1)\r
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document.write( "= 77520\r
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