document.write( "Question 459586: How many committees of four can be selected from a group of seven if the same person must be included in each committee? \n" ); document.write( "

Algebra.Com's Answer #315228 by Edwin McCravy(20055) $\"\"$ $\"About$

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How many committees of four can be selected from a group of seven if the same person must be included in each committee?
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document.write( "Suppose the person who must be in each committee is named Bob.\r\n" );
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document.write( "The problem amounts to selecting 3 from the 6 people besides Bob\r\n" );
document.write( "to put in a committee with Bob.  So the answer is \"6 things choose 3\".\r\n" );
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document.write( "6C3 = (6*5*4)/(3*2*1) = 120/6 = 30\r\n" );
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document.write( "Edwin

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