document.write( "Question 1195867: A bag contains 6 red marbles, 5 blue marbles and 7 green marbles. If three marbles are drawn out of the bag, what is the exact probability that all three marbles drawn will be green?
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Algebra.Com's Answer #828455 by ikleyn(52790) $\"\"$ $\"About$

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document.write( "At the start, there are  6 + 5 + 7 = 18  marbles in the bag.\r\n" );
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document.write( "Of them, 7 marbles are green.\r\n" );
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document.write( "The probability that the first drawn marble is green equals  .\r\n" );
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document.write( "After that, we have 17 marbles in the bag with 6 green marbles.\r\n" );
document.write( "So, the probability that the first two drawn marbles are green equals  .\r\n" );
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document.write( "Analyzing further in the same way, we find that the probability\r\n" );
document.write( "that the first three drawn marbles are green equals \r\n" );
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document.write( "     = reduce the fractions =  = .   ANSWER\r\n" );
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