document.write( "Question 1198366: How many different 4-letter permutations can be formed from the letters in the word REPRESENT?\r
\n" );
document.write( "\n" );
document.write( "I know that if I want deffrent letter it would be permutation
\n" );
document.write( "like 6P4 = 360\r
\n" );
document.write( "\n" );
document.write( "but how about the repeated letters like the E 3 times and r 2 times? \n" );
document.write( "
Algebra.Com's Answer #831949 by ewatrrr(24785)![]() ![]() You can put this solution on YOUR website! How many different 4-letter permutations can be formed from the letters in the word REPRESENT? \n" ); document.write( "Singles(e, n , r , s, t) with duplicate letters (eee,rr) \n" ); document.write( "My Imput: \n" ); document.write( "No Duplicates: 6P4 = 360 0r (6C4)x4! = 360 \n" ); document.write( "1 from single and eee: (5C1)(1C1)x4!/3! = 20 \n" ); document.write( "2 from single and 1 pair of duplicate letter: (5C2)((2C1)4!/2! = 240 \n" ); document.write( "2 pair of duplicate letters: (2C2)4!/2!2! = 6 \n" ); document.write( "How many different 4-letter permutations can be formed from the letters in the word REPRESENT? \n" ); document.write( " How many would be the Sum= 360 + 20 +240+ 6 = 626 \n" ); document.write( " \n" ); document.write( " |