document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=201767>Question 201767</A>: <I><SPAN STYLE=\"word-break: break-all;\"> jan would like to hang 19 of her favorite photo's on a wall in her room, but she has room for only 9. One of the photo is a picture of her grandma. If Jan makes her selection at random, what are the probability that she will pick the picture of her grandma? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #152020 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=152020\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> jan would like to hang 19 of her favorite photo's on a wall in her room, but she has room for only 9. One of the photo is a picture of her grandma. If Jan makes her selection at random, what are the probability that she will pick the picture of her grandma?<BR>\n" );
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document.write( "Find the number of sets of 9 photos that DO NOT have grandma's photo<BR>\n" );
document.write( "in the set. :  18C9 = 48620<BR>\n" );
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document.write( "Find the total number sets of 9 photos. : 19C9 = 92378<BR>\n" );
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document.write( "So the number of sets of size 9 that DO HAVE grandma's photo<BR>\n" );
document.write( "is 92378-48620 = 43758<BR>\n" );
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document.write( "So the probability she will pick grandma's photo is 43758/92378 = 0.4737..<BR>\n" );
document.write( "Cheers,<BR>\n" );
document.write( "Stan H. </SPAN>\n" );
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