document.write( "Question 404572: 1. A drawer contains 10 pairs of loose, unpaired socks. Three pairs are black, 4 are gray, and 3
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document.write( "are brown. If you remove 2 of the socks, what is the probability that they will match? \n" );
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Algebra.Com's Answer #285944 by sudhanshu_kmr(1152)![]() ![]() You can put this solution on YOUR website! \n" ); document.write( "no. of black socks = 6, \r \n" ); document.write( "\n" ); document.write( "gray socks = 8 \r \n" ); document.write( "\n" ); document.write( "brown socks = 6\r \n" ); document.write( "\n" ); document.write( "For matching socks both must be either black, gray or brown.\r \n" ); document.write( "\n" ); document.write( "Probability of both are black = 6C2 / 20C2 \r \n" ); document.write( "\n" ); document.write( "Probability of both are gray = 8C2 / 20C2 \r \n" ); document.write( "\n" ); document.write( "Probability of both are brown = 6C2 / 20C2 \r \n" ); document.write( "\n" ); document.write( "these are mutually exclusive events..\r \n" ); document.write( "\n" ); document.write( "probability of socks are matching = [6C2 / 20C2] + [8C2 / 20C2] + [6C2 / 20C2]\r \n" ); document.write( "\n" ); document.write( "= 15/190 + 28/190 + 15/190 \r \n" ); document.write( "\n" ); document.write( "= 58/190\r \n" ); document.write( "\n" ); document.write( "= 29/95 \n" ); document.write( " \r \n" ); document.write( "\n" ); document.write( " \n" ); document.write( " |