document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=286006>Question 286006</A>: <I><SPAN STYLE=\"word-break: break-all;\"> a box contains 6 red,4 white and 5 black balls .A person draws 4 balls from the box at random. find the probability among the balls drawn there is at least one ball of each color </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #207414 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=207414\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> A box contains 6 red, 4 white and 5 black balls.<BR>\n" );
document.write( "A person draws 4 balls from the box at random. <BR>\n" );
document.write( "A find the probability among the balls drawn there is at least one ball of each color<BR>\n" );
document.write( "-------<BR>\n" );
document.write( "Ans: 1 - P(no red or no white or no black)<BR>\n" );
document.write( "---<BR>\n" );
document.write( "= 1 - [P(no red)+P(no white)+P(no black)]<BR>\n" );
document.write( "---<BR>\n" );
document.write( "= 1 - [9C4 + 11C4 + 10C4]/15C4<BR>\n" );
document.write( "---<BR>\n" );
document.write( "= 1 - 666/1365<BR>\n" );
document.write( "---<BR>\n" );
document.write( "= 0.5121....<BR>\n" );
document.write( "Cheers,<BR>\n" );
document.write( "Stan H. </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );