document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1182239>Question 1182239</A>: <I><SPAN STYLE=\"word-break: break-all;\"> a. A bag contains 8 blue marbles, 9 yellow marbles, and 10 red marbles.<BR>\n" );
document.write( "   If a marble is drawn from the bag, and another marble is drawn, what is the probability of drawing first a blue marble and then a red marble?<BR>\n" );
document.write( "_______\r<BR>\n" );
document.write( "\n" );
document.write( "b. A bag contains 9 white marbles, 10 red marbles, and eight yellow marbles.<BR>\n" );
document.write( "   If two different marbles are drawn from the bag, what is the probability of drawing first a white marble and then a yellow marble?<BR>\n" );
document.write( "_______\r<BR>\n" );
document.write( "\n" );
document.write( "Round to 4 decimal places </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #812214 by </B><A HREF=/tutors/aboutme.mpl?userid=mathmate><B>mathmate(429)</B></A><img src=\"/images/stars/stars-10.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=mathmate><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=mathmate><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=812214\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Given:<BR>\n" );
document.write( "a. 8B, 9Y, 10R marbles.<BR>\n" );
document.write( "Two marbles are drawn (with replacement)<BR>\n" );
document.write( "Find P(BR)<BR>\n" );
document.write( "b. 9W, 10R, 8Y marbles.<BR>\n" );
document.write( "Two marbles are drawn (without replacement).<BR>\n" );
document.write( "Find P(WY)<BR>\n" );
document.write( " <BR>\n" );
document.write( "Solution, using the multiplication rule:<BR>\n" );
document.write( "(a) total 27 marbles.<BR>\n" );
document.write( "P(BR) = (8/27)*(10/27) =80/729  (with replacement)<BR>\n" );
document.write( "      = 0.1097 (to four decimal places)<BR>\n" );
document.write( " <BR>\n" );
document.write( "(b) total 27 marbles.<BR>\n" );
document.write( "P(WY) = (9/27)*(8/26) = 4/39 (without replacement)<BR>\n" );
document.write( "      = 0.1025 (to four decimal places)<BR>\n" );
document.write( " </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );