document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=866146>Question 866146</A>: <I><SPAN STYLE=\"word-break: break-all;\"> A history teacher gives a 20-question true-false exam. In how many ways can the test be answered if the possible answers are T or F or possibly to leave the answer blank? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #522352 by </B><A HREF=/tutors/aboutme.mpl?userid=jim_thompson5910><B>jim_thompson5910(35256)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=jim_thompson5910><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=522352\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> There are 3 possible responses (T, F, B ... B for blank). \r<BR>\n" );
document.write( "<BR>\n" );
document.write( "<BR>\n" );
document.write( "\n" );
document.write( "There are 20 slots.\r<BR>\n" );
document.write( "<BR>\n" );
document.write( "<BR>\n" );
document.write( "\n" );
document.write( "So we will have \r<BR>\n" );
document.write( "<BR>\n" );
document.write( "\n" );
document.write( "<PRE STYLE=\"white-space: pre-wrap; white-space: -moz-pre-wrap; white-space: -pre-wrap; white-space: -o-pre-wrap; word-wrap: break-word;\">          3*3*3*3  *  3*3*3*3   *   3*3*3*3   *   3*3*3*3   *   3*3*3*3 = 3^20 = <font color=\"red\">3,486,784,401</font></PRE> \r<BR>\n" );
document.write( "\n" );
document.write( "different ways to answer this test. </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );