document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=402703>Question 402703</A>: <I><SPAN STYLE=\"word-break: break-all;\"> There are balls numbered 1 through 7 in a box. Two balls are selected at random in succession without replacement, and the number on each ball is noted.<BR>\n" );
document.write( "What probability should be assigned to the event that at least one ball has an odd number?\r<BR>\n" );
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document.write( "How do I set this up? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #284873 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=284873\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> There are balls numbered 1 through 7 in a box. Two balls are selected at random in succession without replacement, and the number on each ball is noted.<BR>\n" );
document.write( "What probability should be assigned to the event that at least one ball has an odd number? <BR>\n" );
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document.write( "Number of odd-numbered balls: 4<BR>\n" );
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document.write( "P(2 odd when 2 selected without replacement) = 4C2/7C2 = (4*3)/(7*6)<BR>\n" );
document.write( "= 12/42<BR>\n" );
document.write( "= 6/21<BR>\n" );
document.write( "= 2/7<BR>\n" );
document.write( "============<BR>\n" );
document.write( "Cheers,<BR>\n" );
document.write( "Stan H. </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );