document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=437311>Question 437311</A>: <I><SPAN STYLE=\"word-break: break-all;\"> In a test of ESP, the experimenter looks at cards that are hidden from a subject. Each card contains one of four shapes; either a star, a circle, a wave and a square. As the experimenter looks at each of 15 cards in turn, the subject names the shape on the card. Assume the cards are independent. What is the probability that a subject guesses all 15 cards correctly? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #302573 by </B><A HREF=/tutors/aboutme.mpl?userid=jorel1380><B>jorel1380(3719)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=jorel1380><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=jorel1380><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=302573\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> The probability that he gets all 15 cards correctly is (1/4)^15 which equals 1/1073741824.. </SPAN>\n" );
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