Random Number Formulas

[carlstedt]

It's easy to generate a random number between 1 and 20 (in this example)
with "=randbetween(1,20)" . However, with this formula a number may
be duplicated.

How can a random number be generated so that no number is repeated ?
In other words, how do I enter the formula to create unique random
numbers between 1 and 20 ?

Thanks !

 

[Tom Ogilvy]

Sounds like you want to shuffle 20 numbers

In column A, enter 1 to 20
in column B put in the formula

=rand()

then select A1:B20 and sort on column B.