document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=747693>Question 747693</A>: <I><SPAN STYLE=\"word-break: break-all;\"> 7 red 3 green and 10 black marbles in a bag.<BR>\n" );
document.write( "2 marbles selected at random, what is the probability that both are green.<BR>\n" );
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document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #455074 by </B><A HREF=/tutors/aboutme.mpl?userid=mikeebsc><B>mikeebsc(26)</B></A><img src=\"/images/stars/stars-07.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=mikeebsc><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=455074\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> First, add the number of marbles together = 20.\r<BR>\n" );
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document.write( "Event A:1st marble is drawn is green: Probability is 3/20<BR>\n" );
document.write( "Event B:2nd marble is drawn is green: Probability is 2/19<BR>\n" );
document.write( "P(B) depends on the P(A)<BR>\n" );
document.write( "P(A) = 3/20<BR>\n" );
document.write( "P(B|A) = 2/19 (The probability of B happening assuming A happened) <BR>\n" );
document.write( "P(A and B)= P(A) * P(B|A)<BR>\n" );
document.write( "P(A and B) =3/20 * 2/19= .0016\r<BR>\n" );
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