document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=214732>Question 214732</A>: <I><SPAN STYLE=\"word-break: break-all;\"> In a box there are 7 balls, of which 3 are red and 4 are white. Three balls will be withdrawn at random. Find the probability that at least one ball will be red.\r<BR>\n" );
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document.write( "Thank you for your help. Best regards </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #162210 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=162210\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> In a box there are 7 balls, of which 3 are red and 4 are white. Three balls will be withdrawn at random. Find the probability that at least one ball will be red. <BR>\n" );
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document.write( "P(at least one ball is red) = 1 - P(no ball is red)<BR>\n" );
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document.write( "P(at least one) = 1 - [4C3/7C3] = 1 - 4/35 = 31/35<BR>\n" );
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document.write( "Cheers,<BR>\n" );
document.write( "Stan H. </SPAN>\n" );
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