document.write( "Question 412876: Please help me solve this problem: You have 5 books. In how many different orders can you read three of the 5 books? \n" ); document.write( "
Algebra.Com's Answer #289896 by edjones(8007)![]() ![]() You can put this solution on YOUR website! When order is important it's a permutation \n" ); document.write( "nPr=the number of ways n things can be arranged r at a time.=n!/(n-r)! \n" ); document.write( "5!/2!=5*4*3=60 ways \n" ); document.write( ". \n" ); document.write( "Ed \n" ); document.write( " |