document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1000580>Question 1000580</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Dear tutor,\r<BR>\n" );
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document.write( "Please help me with this question.\r<BR>\n" );
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document.write( "A jar contains 10 blue marbles, 5 red marbles, 4 green marbles, and 1 yellow marble. Two marbles are chosen (without replacement).\r<BR>\n" );
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document.write( "(a) What is the probability that one will be green and the other red? \r<BR>\n" );
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document.write( "Total is 20. P(green)=4/20 P(red)=5/19 (total is 19 because is says without replacement) 4/20 x 5/19 = 0.0526. but the answer is 2/19= 0.105\r<BR>\n" );
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document.write( "I am not sure what I am missing here...Thank you in advance....<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 #618001 by </B><A HREF=/tutors/aboutme.mpl?userid=rothauserc><B>rothauserc(4718)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=rothauserc><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=rothauserc><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=618001\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> a)  There are 190 ways to choose 2 marbles, that is 20 marbles taken 2 at a time is 20! / (2! * (20 - 2)!) = (20 * 19) / 2 = 190,<BR>\n" );
document.write( "there are 5 * 4 possible sets that include 1 green and 1 red, therefore<BR>\n" );
document.write( "Probability(1 green, 1 red) = ((5*4) / 190) = (20 / 190) = 2 / 19<BR>\n" );
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