document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=681934>Question 681934</A>: <I><SPAN STYLE=\"word-break: break-all;\"> we want to form a 4 letter password using letters from A,B,C,D,E,F without repetition, what is the probability that the first letter of the password is A and the last letter is F?? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #422868 by </B><A HREF=/tutors/aboutme.mpl?userid=MathLover1><B>MathLover1(20850)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=MathLover1><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=MathLover1><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=422868\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> 4 letter password using letters from A,B,C,D,E,F\r<BR>\n" );
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document.write( "By assuming that the first letter is \"A\",  and the last letter is “F\",\r<BR>\n" );
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document.write( "Therefore, one has to find two more letters from the remaining 4 letters.\r<BR>\n" );
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document.write( "Of the 4 letters, there are 1 B, 1 C, 1 D, and 1 E .\r<BR>\n" );
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document.write( "The second and third positions can  have two different letters.\r<BR>\n" );
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document.write( "When the two letters are different. One has to choose two different letters from the 4 available different choices. This can be done in 4 * 3=12 ways.\r<BR>\n" );
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document.write( "Total number of possibilities  is 12.\r<BR>\n" );
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document.write( "1. A,B,C,F\r<BR>\n" );
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document.write( "2. A,C,B,F\r<BR>\n" );
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document.write( "3. A,B,D,F\r<BR>\n" );
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document.write( "4. A,D,B,F\r<BR>\n" );
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document.write( "5. A,C,D,F\r<BR>\n" );
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document.write( "6. A,D,C,F\r<BR>\n" );
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document.write( "7. A,C,E,F\r<BR>\n" );
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document.write( "8. A,E,C,F\r<BR>\n" );
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document.write( "9. A,D,E,F\r<BR>\n" );
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document.write( "10. A,E,D,F\r<BR>\n" );
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document.write( "11. A,B,E,F\r<BR>\n" );
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document.write( "12. A,E,B,F </SPAN>\n" );
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