document.write( "Question 40624: please help
\n" );
document.write( "How many arrangements of the letters in the word OLIVE can you make if each arrangement must use three letters?
\n" );
document.write( "please explain the answer
\n" );
document.write( "A)20
\n" );
document.write( "b)60
\n" );
document.write( "c)8*7*6*5*4*3*2*1 \n" );
document.write( "
Algebra.Com's Answer #26032 by kev82(151)![]() ![]() ![]() You can put this solution on YOUR website! Hi,\r \n" ); document.write( "\n" ); document.write( "I don't quite understand the question. So I'm going to restate it as what I think it means, and hopefully we'll both be on the same wavelength. Using any of the letters O, L, I, V, E at most once. How many distinct three letter words can you make?\r \n" ); document.write( "\n" ); document.write( "This is quite simple really. You just have to think about how many choices there are for each letter of your three letter word.\r \n" ); document.write( "\n" ); document.write( "For the first letter you can choose any one of the five letters. \n" ); document.write( "For the second letter you can only choose four letters as you've already taken one of them. \n" ); document.write( "For the third letter you can choose any of the three remaining letters so in total that is 5*4*3=60 different words.\r \n" ); document.write( "\n" ); document.write( "I don't know whether you've met it yet, but there is a function callled the permutation function that works this out.\r \n" ); document.write( "\n" ); document.write( " \n" ); document.write( "\n" ); document.write( "So P(5,3)=120/2=60.\r \n" ); document.write( "\n" ); document.write( "Hope that helps, \n" ); document.write( "Kev \n" ); document.write( " |