Do RAND() first, Sort, THEN apply 1-9004 to the results.

Meesh wrote:

I'm trying to randomly assign a number between 1 and 9004 for a mailing list
in Excel. What I plan to do, is then sort cases from smallest number (1) to
largest number (9004) and take the first half to use in my sample for a
survey project. I want each 'case' in the list to recieve one number b/w 1
and 9004 with NO duplicates. The formulas I have tried using with no success
in eliminating duplicates a =TRUNC(RAND()*9004) and
=TRUNC(RAND()*9004-1)+1.
Please help!