The standard way do sampling without replacement is to list the available
values (0,1,...,10), in the next column put random numbers (e.g. =RAND(), but
then Copy/Paste Special Values to keep them from recalculating). Sort both
columns by the random numbers, then select from the now randomized list of
integers between zero and ten.

Jerry

"John T" wrote:

On 23 Jan 2007 12:49:04 -0800, "Harlan Grove" wrote:

John T wrote...
I'm using random number generation using randbetween(0,10).

Is there a way of stopping it from displaying the same number twice in
a row?

No, because there's nonzero probability that drawing from 0..10 with
replacement will produce duplicates.

If you could live with circular recalc, run the menu command Tools
Options, select the Calculation tab in the Options dialog, check the
Iteration box and set Maximum iterations to 1. Then try the following
formula in cell A1.

=MOD(A1+RANDBETWEEN(1,10),11)

Thanks for your suggestion, it almost works but throws up other
problems in the file.

Cheers

John T

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