Whether it will make a difference or not, I can't say, but you have left out the fourth parameter of VLOOKUP.

Help is misleading on the question. For a list sorted in ascending order, such as you have, Help suggests the fourth parameter TRUE (1).

If you specify FALSE (0), VLOOKUP makes an exact match. That may make a difference to your results.

If you want a different result, use SHIFT+CTRL+F9 to force a recalculation. (You may find that without the fourth parameter, recalculation causes an error.)

Andy Chaplin wrote:
Hi there Everyone

I have a problem with the calc formula RANDBETWEEN.

I have created a numbered list from 1 to 100 in column A.  In column B is a 
list of questions I want to select.

In another sheet I have used VLOOKUP and RANDBETWEEN in 10 sucessive rows to select 10 random items from the list. So far so good. The problem is that RANDBETWEEN allow duplicates (and I must say, they appear unusually frequently!).
The formula I used was:

=VLOOKUP(RANDBETWEEN(1;100);'other_sheet'.$A$6:$C$105;2)

Is it possible to select from a list randomly but without duplicates?

Any suggestions would be appreciated.
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