document.write( "Question 915469: ann, donna, fay, bob, and carl all want to go to the movies but ann and donna got into a fight and can not sit together in the movie theater. how many ways can they be seated in a row?
\n" );
document.write( " \n" );
document.write( "
Algebra.Com's Answer #555617 by ewatrrr(24785)![]() ![]() You can put this solution on YOUR website! 5 people \n" ); document.write( "5! - 4! = 120 - 2*24 = 72 ways \n" ); document.write( "4! being number of ways if they did sit together \n" ); document.write( "(considering them as one Unit)\r \n" ); document.write( "\n" ); document.write( "2*4! allowing for them to sit on either side of one another \n" ); document.write( " |