document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=839511>Question 839511</A>: <I><SPAN STYLE=\"word-break: break-all;\"> How many different 4-Digit numbers can be formed from digits 1-4 if the digits can repeat? if they cant? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #505724 by </B><A HREF=/tutors/aboutme.mpl?userid=swincher4391><B>swincher4391(1107)</B></A><img src=\"/images/stars/stars-12.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=swincher4391><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=swincher4391><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=505724\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> If they can: There are 4 spots for each digit so 4^4 = \r<BR>\n" );
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document.write( "256 permutations\r<BR>\n" );
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document.write( "If they cant:  4 spots for the 1st digit, 3 spots for the 2nd digit ... etc\r<BR>\n" );
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document.write( "So there are 4*3*2*1 = 24 permutations. </SPAN>\n" );
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