document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1117491>Question 1117491</A>: <I><SPAN STYLE=\"word-break: break-all;\"> A coin is tossed 3 times and let X be the number of heads appearing. The probability that 1 head will appear is? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #733776 by </B><A HREF=/tutors/aboutme.mpl?userid=Shin123><B>Shin123(626)</B></A><img src=\"/images/stars/stars-11.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=Shin123><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=Shin123><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=733776\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> There are <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=2%5E3=8 ALIGN=MIDDLE  ALT=\"2%5E3=8\"   DISABLED_style= \"max-width:90%; height:auto;\" > possible incomes. And there are 3 incomes that have exactly 1 head (1st coin has head,2nd has head,or 3rd makes head). Therefore, the probability is <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=3%2F8 ALIGN=MIDDLE  ALT=\"3%2F8\"   DISABLED_style= \"max-width:90%; height:auto;\" >. The other tutor @ikleyn thought of the probability of at least 1 head, but the problem clearly questions  about the probability of <H2>1</H2> head. </SPAN>\n" );
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