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?
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Algebra.Com's Answer #831949 by ewatrrr(24785)\"\" \"About 
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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
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