document.write( "Question 1120229: in how many ways can 4 red, 3 yellow and 2 green discs be arranged in a row if the disc of same colour are indistinguishable? \n" ); document.write( "

Algebra.Com's Answer #735892 by ikleyn(52781) $\"\"$ $\"About$

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document.write( "4 + 3 + 2 = 9.\r\n" );
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document.write( "The answer to this question is:  in   =  = 1260 ways.\r\n" );
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document.write( "4! in the denominator accounts for 4 red  indistinguishable disks;\r\n" );
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document.write( "3! in the denominator accounts for 3 yellow  indistinguishable disks;\r\n" );
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document.write( "2! in the denominator accounts for 2 green  indistinguishable disks.\r\n" );
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\n" ); document.write( "\n" ); document.write( "See the lesson\r
\n" ); document.write( "\n" ); document.write( " - Arranging elements of sets containing indistinguishable elements \r
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