document.write( "Question 342886: How many ways can the letters RRSRSS be arranged?\r
\n" ); document.write( "\n" ); document.write( "I got: (6)(5)(4)(3)(2)(1)= 720 ways \n" ); document.write( "
Algebra.Com's Answer #245456 by Fombitz(32388)\"\" \"About 
You can put this solution on YOUR website!
That would be the case if each of the letters was unique.
\n" ); document.write( "You are overcounting.
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\n" ); document.write( "Think about a simpler setup.
\n" ); document.write( "Look at 3 distinct letters.
\n" ); document.write( "ABC
\n" ); document.write( "ACB
\n" ); document.write( "BAC
\n" ); document.write( "BCA
\n" ); document.write( "CAB
\n" ); document.write( "CBA
\n" ); document.write( "3!/(3-3)!=6 ways\r
\n" ); document.write( "\n" ); document.write( "Now look at only 2 distinct letters but 3 total letters.
\n" ); document.write( "AAC
\n" ); document.write( "ACA
\n" ); document.write( "CAA
\n" ); document.write( "Only 3 different patterns available.\r
\n" ); document.write( "\n" ); document.write( "If they were all the same then only AAA would be unique, 1 pattern.
\n" ); document.write( "Think about it and repost if you need more help.
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