document.write( "Question 954612: In how many ways can a group of 24 students be organized into groups of 2 if student number 3 and student number 22 must always be one of the pairs? How can this situation be expressed mathematically? \n" ); document.write( "
Algebra.Com's Answer #583061 by stanbon(75887)![]() ![]() ![]() You can put this solution on YOUR website! In how many ways can a group of 24 students be organized into groups of 2 if student number 3 and student number 22 must always be one of the pairs? How can this situation be expressed mathematically? \n" ); document.write( "---- \n" ); document.write( "Let those 2 form one of the pairs. \n" ); document.write( "# of other pairs = 22C2 = (22*21)/2 = 11*21 = 231 other pairs \n" ); document.write( "----- \n" ); document.write( "Total number of pairs = 1 + 22C2 \n" ); document.write( "----------------------------------- \n" ); document.write( "cheers, \n" ); document.write( "Stan H. \n" ); document.write( "------------- \n" ); document.write( " |