document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=142971>Question 142971</A>This question is from textbook <A HREF=http://www.amazon.com/exec/obidos/ASIN/0321356861/algebrahomeworkh>Mathematics All Around</A><BR>\n" );
document.write( ": <I><SPAN STYLE=\"word-break: break-all;\"> Please help me understand probability and if i set up this problem correctly?<BR>\n" );
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document.write( "I am struggle with knowing how to lay out to get the correct answers. <BR>\n" );
document.write( "This is on a hand out sheet so it is not my math book.\r<BR>\n" );
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document.write( "Indicated probability.<BR>\n" );
document.write( "A box contains 20 blue marbles, 16 green marbles and 14 red marbles. Two marbles are selected at random without replacement. Let E be the event that the first marble selected is green.  Let F be the event that the second marble selected is green. Find P(F/E).<BR>\n" );
document.write( "First i added the total number of marbles  20+16+14 = 50  <BR>\n" );
document.write( "Then I put 16/50 * 15/49 = 24/25  =.96  = 96%<BR>\n" );
document.write( "Would the P(16/15) = 96%?<BR>\n" );
document.write( " I am not sure if this is correct. <BR>\n" );
document.write( "Thank You.\r<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 #104024 by </B><A HREF=/tutors/aboutme.mpl?userid=oscargut><B>oscargut(2103)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=oscargut><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=oscargut><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=104024\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Let E be the event that the first marble selected is green.<BR>\n" );
document.write( "Let F be the event that the second marble selected is green.<BR>\n" );
document.write( "A box contains 20 blue marbles, 16 green marbles and 14 red marbles<BR>\n" );
document.write( "P(F/E)=15/49 because if the first marble selected is green there are 49 in total and 15 are green.\r<BR>\n" );
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