document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=390475>Question 390475</A>: <I><SPAN STYLE=\"word-break: break-all;\"> How many 4-letter words with at least one vowel can be constructed from the letters A, B, C, D, and E? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #276860 by </B><A HREF=/tutors/aboutme.mpl?userid=haileytucki><B>haileytucki(390)</B></A><img src=\"/images/stars/stars-10.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=haileytucki><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=haileytucki><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=276860\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> There are 5 letters and the question asks for How many four letter words?\r<BR>\n" );
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document.write( "This is a possibility problem:\r<BR>\n" );
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document.write( "5P4\r<BR>\n" );
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document.write( "Find the number of possible ordered permutations when r items are selected from n available items.<BR>\n" );
document.write( "5P4=nPr=(n!)/(n-r!)\r<BR>\n" );
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document.write( "Fill in the known values.<BR>\n" );
document.write( "(5!)/((5-4)!)\r<BR>\n" );
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document.write( "Cancel out the common factorial factors.<BR>\n" );
document.write( "5*4*3*2\r<BR>\n" );
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document.write( "Multiply 5 by 4 to get 20.<BR>\n" );
document.write( "20*3*2\r<BR>\n" );
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document.write( "Multiply 20 by 3 to get 60.<BR>\n" );
document.write( "60*2\r<BR>\n" );
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document.write( "Multiply 60 by 2 to get 120.<BR>\n" );
document.write( "Answer= 120 </SPAN>\n" );
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