document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=193297>Question 193297</A>: <I><SPAN STYLE=\"word-break: break-all;\"> 2) A bag contains 9 white and 12 black balls. Find the probability of drawing 5 black balls.<BR>\n" );
document.write( "3)A bag contains 2 red, 3 green, 5 blue, and 2 yellow balls. Find the probability that balls of all the colours are represented in a sample if four balls are selected at random. </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #145162 by </B><A HREF=/tutors/aboutme.mpl?userid=stanbon><B>stanbon(75887)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=stanbon><IMG SRC=http://www.algebra.com/images/aboutme-small.gif BORDER=0 alt=\"About Me\" VALIGN=MIDDLE></A>&nbsp;<IMG SRC=http://www.algebra.com/images/nopicture.jpg><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=145162\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> A bag contains 9 white and 12 black balls. Find the probability of drawing 5 black balls.<BR>\n" );
document.write( "# of ways to draw the 5 black balls : 12C5 = 792<BR>\n" );
document.write( "# of ways to draw 5 balls without restriction: 21C5 = 20349<BR>\n" );
document.write( "Ans: 12C5/21C5 = 0.03892<BR>\n" );
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document.write( "3)A bag contains 2 red, 3 green, 5 blue, and 2 yellow balls. Find the probability that balls of all the colors are represented in a sample if four balls are selected at random.<BR>\n" );
document.write( "# of ways to succeed: 2*3*5*2 = 60<BR>\n" );
document.write( "# of 4-ball groups in 12: 12C4 = 495<BR>\n" );
document.write( "Probability: 60/495 = 0.1212..<BR>\n" );
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document.write( "cheers,<BR>\n" );
document.write( "stan H. </SPAN>\n" );
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