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RE: How do I create a such List?

  • To: mathgroup at smc.vnet.net
  • Subject: [mg36133] RE: [mg36126] How do I create a such List?
  • From: "Harvey P. Dale" <hpd1 at nyu.edu>
  • Date: Fri, 23 Aug 2002 00:25:06 -0400 (EDT)
  • Sender: owner-wri-mathgroup at wolfram.com

Bryan:
	This should do it:
(#[[1]]/( #[[2]]*#[[3]]) +#[[4]]/(#[[5]]*#[[6]]) +#[[7]]/(#[[8]]*#[[9]])) &
/@ Permutations[Range[9]]
	Best,
	Harvey
Harvey P. Dale
University Professor of Philanthropy and the Law
Director, National Center on Philanthropy and the Law
New York University School of Law
Room 206A
110 West 3rd Street
New York, N.Y. 10012-1074

-----Original Message-----
From: timreh719 at yahoo.com.tw [mailto:timreh719 at yahoo.com.tw] 
To: mathgroup at smc.vnet.net
Subject: [mg36133] [mg36126] How do I create a such List?

Hi All:
   I want to solve this math problem: a/(b*c)+d/(e*f)+g/(h*i)=1 where
a,b,c,,,,i are nature numbers range from 1~9 and all is different.
So,I want to create a list which its element are all possible order of
Range[9].
Ex.{{3,4,1,6,5,8,7,9,2},{1,2,5,4,3,7,9,8,6},,,,,,,,,} it has 9!=362880
elements.
    Thanks in advance                                 sincerely   
byran

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