All seems to work when I use your formulas. There are ten possible
combinations to check for repeats (note that RAND() recalculates with
every change to the sheet)

If your RAND formula (=rand()*(100-1)+1) is in cells A1:E1 and in
A2:A11 you have the following formulas:

=IF(A1=B1,"Repeat","Good")
=IF(A1=C1,"Repeat","Good")
=IF(A1=D1,"Repeat","Good")
=IF(A1=E1,"Repeat","Good")
=IF(B1=C1,"Repeat","Good")
=IF(B1=D1,"Repeat","Good")
=IF(B1=E1,"Repeat","Good")
=IF(C1=D1,"Repeat","Good")
=IF(C1=E1,"Repeat","Good")
=IF(D1=E1,"Repeat","Good")

Each cell in this range will return "Good" (as there are no
duplicates), plus the odds of a repeat are staggering... unless you use
the INT function =INT(rand()*(100-1)+1).

What is failing for you?


--
swatsp0p


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