document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1163284>Question 1163284</A>: <I><SPAN STYLE=\"word-break: break-all;\"> A bag contains three red, four white and three black, identical balls, three balls are  drawn  at  random  without  replacement  from  the  bag.  What  is  the probability that at least a ball is white. </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #787341 by </B><A HREF=/tutors/aboutme.mpl?userid=dkppathak><B>dkppathak(439)</B></A><img src=\"/images/stars/stars-10.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=dkppathak><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/cgi-bin/show-face.mpl?user=dkppathak><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=787341\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\">  A bag contains three red, four white and three black, identical balls, three balls are drawn at random without replacement from the bag. What is the probability that at least a ball is white.<BR>\n" );
document.write( "solution<BR>\n" );
document.write( "total balls =3+4+3=10     and white balls are  4<BR>\n" );
document.write( "probability of at least  one white = probability of 1 white + probability of two white +  probability of three white <BR>\n" );
document.write( "=4c1x6c2/10c3+4c2x6c1/10c3+4c3x6c0/10c3<BR>\n" );
document.write( "4x15/120+6x6/120+4x1/120<BR>\n" );
document.write( "60/120+36/120+4/120<BR>\n" );
document.write( "100/120<BR>\n" );
document.write( "=20/24=5/6 </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );