document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=230433>Question 230433</A>: <I><SPAN STYLE=\"word-break: break-all;\"> If a seven is the desired number, what is the probability on getting a seven on exactly one of five rolls of the dice? On all five? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #170640 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=170640\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> If a seven is the desired number, what is the probability on getting a seven on exactly one of five rolls of the dice? On all five?<BR>\n" );
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document.write( "When you roll two dice there are 6 ways to get a sum of seven:<BR>\n" );
document.write( "1/6.2/5,3/4,4/3,5/2,6/1<BR>\n" );
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document.write( "P(7) on one roll = 6/26 = 1/6<BR>\n" );
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document.write( "P(exactly one 7 in five rolls) = 5C1(1/6)^1(5/6)^4 = 0.4019...<BR>\n" );
document.write( "Cheers,<BR>\n" );
document.write( "Stan H. </SPAN>\n" );
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