document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=433286>Question 433286</A>: <I><SPAN STYLE=\"word-break: break-all;\"> In a box of thrity aaa batteries there are three defective batteries. Two batteries are randomly selected and tested. What is the probability that both are defective, if the first one is not replaced after being tested </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #300335 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=300335\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> In a box of thirty aaa batteries there are three defective batteries. <BR>\n" );
document.write( "Two batteries are randomly selected and tested. What is the probability that both are defective,<BR>\n" );
document.write( "Ans: 3C2/30C2 = 3/(15*29) = 1/145<BR>\n" );
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document.write( "If the first one is not replaced after being tested<BR>\n" );
document.write( "Ans: 3/30 * 2/29 = 6/(30*29) = 1/145 \r<BR>\n" );
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document.write( "Cheers,<BR>\n" );
document.write( "Stan H.<BR>\n" );
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