document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=212074>Question 212074</A>: <I><SPAN STYLE=\"word-break: break-all;\">     I have six grandchildren, the youngest born on August 10, 2009. My oldest grandchild was born on August 10, 1996 and her younger sister was born on August 10, 2000. What is the probability of having 3 of 6 grandchildren share the same birthday?\r<BR>\n" );
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document.write( "Jack Frost, MD </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #160244 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=160244\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> P(having a certain birthdate) = 1/365<BR>\n" );
document.write( "Binomial Problem: 3 of 6 have the same birthdate.<BR>\n" );
document.write( "P(3 of 6) = 6C3(1/365)^3*(364/365)^3 <BR>\n" );
document.write( "= 20(365)^(-3)(0.997)^(3)<BR>\n" );
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document.write( "= 0.00000040792...<BR>\n" );
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document.write( "Cheers,<BR>\n" );
document.write( "Stan H. <BR>\n" );
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