document.write( "Question 254461: a bag contains 4 white ball,5 red ball,6 green balls 3 balls are drawns at random.wht is the probabilty that a white ,ared ,gerrn ball is drawn \n" ); document.write( "

Algebra.Com's Answer #186802 by stanbon(75887) $\"\"$ $\"About$

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A bag contains 4 white ball,5 red ball,6 green balls 3 balls are drawns at random.what is the probabilty that a white ,a red ,a green ball are drawn.
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\n" ); document.write( "# of possible outcomes: 15C3 = 455 sets of 3 balls
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\n" ); document.write( "# of all white = 4C3= 4
\n" ); document.write( "# of all red = 5C3 = 10
\n" ); document.write( "# of all green = 6C2 = 15
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\n" ); document.write( "# of 2W and 1red = (4C2)*5 = 30
\n" ); document.write( "# of 2W and 1green= (4C2)*6 = 36
\n" ); document.write( "# of 2R and 1W = (5C2)*4 = 40
\n" ); document.write( "# of 2R and 1G = (5C2)*6 = 60
\n" ); document.write( "# of 2G and 1red = (6C2)*5 = 75
\n" ); document.write( "# of 2G and 1W = (6C2)4 = 60
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\n" ); document.write( "# of ways to get 1R,1W,1G = 455-[29+226+75] = 125
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\n" ); document.write( "P(1R,1W,1G) = 125/455 = 0.2747
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\n" ); document.write( "Cheers,
\n" ); document.write( "Stan H. \n" ); document.write( "

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