document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=912410>Question 912410</A>: <I><SPAN STYLE=\"word-break: break-all;\"> A bag contains 10 counters, of which 7 are green and 3 are while.  A counter is picked at random from the bag and its color is noted.  The counter is not replaced.  A second counter is then picked.  Find the probability that<BR>\n" );
document.write( "a) the first counter is green<BR>\n" );
document.write( "b) the first counter is and green and the second is white<BR>\n" );
document.write( "c) the counters are different colors </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #553787 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=553787\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> A bag contains 10 counters, of which 7 are green and 3 are while. A counter is picked at random from the bag and its color is noted. The counter is not replaced. A second counter is then picked. Find the probability that<BR>\n" );
document.write( " a) the first counter is green:: 7/10<BR>\n" );
document.write( "-----------------------------------------------------<BR>\n" );
document.write( " b) the first counter is green and the second is white::(7/10)(3/9)= 7/30<BR>\n" );
document.write( "------------------------------------------------<BR>\n" );
document.write( " c) the counters are different colors<BR>\n" );
document.write( "P(both are green) = 7C2/10C2<BR>\n" );
document.write( "P(both are white) = 3C2/10C2<BR>\n" );
document.write( "---<BR>\n" );
document.write( "Ans: P(diffferent colors) = 1-[7C2+3C2]/10C2 = 1 - [24/45] = 21/45 = 7/15<BR>\n" );
document.write( "-------------------------<BR>\n" );
document.write( "Cheers,<BR>\n" );
document.write( "Stan H. </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );