document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=997484>Question 997484</A>: <I><SPAN STYLE=\"word-break: break-all;\"> If three coins are tossed, what is the probability that I will get two heads and a tail?\r<BR>\n" );
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document.write( "We just recently started probability and the whole \"at least two heads\" i really throwing me off. </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #615542 by </B><A HREF=/tutors/aboutme.mpl?userid=Theo><B>Theo(13342)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=Theo><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/cgi-bin/show-face.mpl?user=Theo><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=615542\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> the probability you will get 2 heads and a tail is 3 out of 8 = 3/8 = .375\r<BR>\n" );
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document.write( "let's look at the total possibilities.\r<BR>\n" );
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document.write( "you can get:\r<BR>\n" );
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document.write( "H H H <BR>\n" );
document.write( "H H T<BR>\n" );
document.write( "H T H<BR>\n" );
document.write( "T H H<BR>\n" );
document.write( "H T T<BR>\n" );
document.write( "T H T<BR>\n" );
document.write( "T T H<BR>\n" );
document.write( "T T T \r<BR>\n" );
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document.write( "out of these possibilities, 3 of them contain EXACTLY two heads and 1 tail.<BR>\n" );
document.write( "those are:\r<BR>\n" );
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document.write( "H H H <BR>\n" );
document.write( "H H T *****<BR>\n" );
document.write( "H T H *****<BR>\n" );
document.write( "T H H *****<BR>\n" );
document.write( "H T T<BR>\n" );
document.write( "T H T<BR>\n" );
document.write( "T T H<BR>\n" );
document.write( "T T T \r<BR>\n" );
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document.write( "the probability that you will get EXACTLY 2 heads and a tail is therefore 3/8 = .375.\r<BR>\n" );
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document.write( "out of these possibilities, 4 of them contain AT LEAST 2 heads.<BR>\n" );
document.write( "those are:\r<BR>\n" );
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document.write( "H H H ***** <BR>\n" );
document.write( "H H T *****<BR>\n" );
document.write( "H T H *****<BR>\n" );
document.write( "T H H *****<BR>\n" );
document.write( "H T T<BR>\n" );
document.write( "T H T<BR>\n" );
document.write( "T T H<BR>\n" );
document.write( "T T T \r<BR>\n" );
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document.write( "that probability is the sum of getting EXACTLY 2 heads and a tail, plus the probability of getting EXACTLY 3 heads.\r<BR>\n" );
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document.write( "that probability is therefore equal to 3/8 + 1/8 = 4/8 = 1/2. = .5\r<BR>\n" );
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document.write( " </SPAN>\n" );
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