document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=550170>Question 550170</A>: <I><SPAN STYLE=\"word-break: break-all;\"> a two digits number is formed using digits 3,4,5,6 and 7 without replacement .what is the probability that the number is a multiple of 3. </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #358496 by </B><A HREF=/tutors/aboutme.mpl?userid=MathLover1><B>MathLover1(20849)</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=358496\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> the answer is P(5, 2) = 5!/(5-2)! = 5!/3!= (5*4*3*2*1)/(3*2*1)=5*4 = 20\r<BR>\n" );
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document.write( "you can also find these two digits  numbers by using a Cartesian Coordinate system if you put all numbers (3,4,5,6 and 7) on x and y axis, than find all pairs\r<BR>\n" );
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document.write( "after you find all pairs, you need to EXCLUDE pairs (3,3),(4,4),(5,5), (6,6) and (7,7) </SPAN>\n" );
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