document.write( "Question 1082376: Three letters are to be chosen from the word BIOLOGY.
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document.write( "Find the number of ways if
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document.write( "a) it contains both the letters O \n" );
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Algebra.Com's Answer #696444 by Edwin McCravy(20055)![]() ![]() You can put this solution on YOUR website! \r\n" ); document.write( "Does order matter?\r\n" ); document.write( "\r\n" ); document.write( "Do you consider [OBO], [OOB], and [BOO], as 1 choice or as 3 choices?\r\n" ); document.write( "\r\n" ); document.write( "We must know whether they are considered different or all the same.\r\n" ); document.write( "\r\n" ); document.write( "If it is one choice then there are only 5 ways:\r\n" ); document.write( "\r\n" ); document.write( "{B,O,O}, {I,O,O}, {L,O,O}, {G,O,O}, and {Y,O,O} \r\n" ); document.write( "\r\n" ); document.write( "If it is three choices then there are 15 ways:\r\n" ); document.write( "\r\n" ); document.write( "BOO, OBO, OOB,\r\n" ); document.write( "IOO, OIO, OOI,\r\n" ); document.write( "LOO, OLO, OOL,\r\n" ); document.write( "GOO, OGO, OOG,\r\n" ); document.write( "YOO, OYO, OOY.\r\n" ); document.write( "\r\n" ); document.write( "Edwin\n" ); document.write( " |