document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=69034>Question 69034</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Each Morse code symbol for a letter of the alphabet consists of dots(.) and dashes(-).  Each symbol contains between 1 and 4 dots or dashes.  How many different symbols can be made. </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #49146 by </B><A HREF=/tutors/aboutme.mpl?userid=josmiceli><B>josmiceli(19441)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=josmiceli><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=josmiceli><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=49146\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> For a single keystroke, there are 2 possible<BR>\n" );
document.write( "(.),(-)<BR>\n" );
document.write( "For a double keystroke, there are 4 possible<BR>\n" );
document.write( "(..)<BR>\n" );
document.write( "(--)<BR>\n" );
document.write( "(.-)<BR>\n" );
document.write( "(-.)<BR>\n" );
document.write( "For 3 keystrokes, ther are 8 possible<BR>\n" );
document.write( "(...)<BR>\n" );
document.write( "(..-)<BR>\n" );
document.write( "(.-.)<BR>\n" );
document.write( "(-..)<BR>\n" );
document.write( "(---)<BR>\n" );
document.write( "(--.)<BR>\n" );
document.write( "(-.-)<BR>\n" );
document.write( "(.--)<BR>\n" );
document.write( "And for 4 keystrokes, there are 16 possible<BR>\n" );
document.write( "Without going through all the combinations, there<BR>\n" );
document.write( "are 2 choices for the 1st, 2 for the 2nd, 2 for the 3rd, and 2 for the 4th<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=2%2A2%2A2%2A2+=+16 ALIGN=MIDDLE  ALT=\"2%2A2%2A2%2A2+=+16\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "To sum the total possible characters<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=2+%2B+4+%2B+8+%2B+16+=+30 ALIGN=MIDDLE  ALT=\"2+%2B+4+%2B+8+%2B+16+=+30\"   DISABLED_style= \"max-width:90%; height:auto;\" > answer </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );