document.write( "Question 538363: A bag contains 30 marbles with 18 blue ones and 12 red ones. If you reach into the bag and draw out marbles one at a time until you have three in your hand, what is the probability that they are all blue?
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document.write( " A. 68/375
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document.write( " B. 11/203
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document.write( " C. 204/1015
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document.write( " D. 27/125 \n" );
document.write( "
Algebra.Com's Answer #353159 by stanbon(75887) ![]() You can put this solution on YOUR website! A bag contains 30 marbles with 18 blue ones and 12 red ones. If you reach into the bag and draw out marbles one at a time until you have three in your hand, what is the probability that they are all blue? \n" ); document.write( "--- \n" ); document.write( "# of ways to succeed: 18C3 \n" ); document.write( "# of random results: 30C3 \n" ); document.write( "--- \n" ); document.write( "P(3 blue) = 18C3/30C3 = 204/1015 \n" ); document.write( "====================================== \n" ); document.write( "Cheers, \n" ); document.write( "Stan H. \n" ); document.write( "================ \n" ); document.write( "A. 68/375 \n" ); document.write( "B. 11/203 \n" ); document.write( "C. 204/1015 \n" ); document.write( "D. 27/125 \n" ); document.write( " \n" ); document.write( " |