document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=889958>Question 889958</A>: <I><SPAN STYLE=\"word-break: break-all;\"> A fair coin is tossed 3 times in a row. What is the probability that heads appears exactly 2 times?\r<BR>\n" );
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document.write( "1/8 \r<BR>\n" );
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document.write( "3/8 \r<BR>\n" );
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document.write( "3/16 \r<BR>\n" );
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document.write( "3/4  </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #834115 by </B><A HREF=/tutors/aboutme.mpl?userid=greenestamps><B>greenestamps(13203)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=greenestamps><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=greenestamps><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=834115\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> <br><BR>\n" );
document.write( "There are 2 possible outcomes on each toss, so the number of sequences of outcomes on three tosses is 2*2*2 = 8.<br><BR>\n" );
document.write( "Of those 8 possible sequences, 3 of them have exactly 2 heads: HHT, HTH and THH.<br><BR>\n" );
document.write( "So the probability of getting 2 heads on three tosses is 3/8.<br><BR>\n" );
document.write( "Note for this simple example it is easy to see that there are three ways of getting 2 heads, by seeing that the one tail can come up on any one of the three tosses.<br><BR>\n" );
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