Excel Random number from a set of options

Question

In MS Excel, how can I randomly calculate a number number that is from one of a set of 5 options?

For example, in cell B1 I would like to have a random number that is either 15,30,50,75, or 100.

I would like a completely random output of these 5 numbers in cells B1:B100.

I was thinking that I could generate a random number in cell A1 using rand, then using a series of > or < IF statements to output only one of these numbers above.

Answer 1

This formula will do it:

=CHOOSE(RANDBETWEEN(1,5),15,30,50,75,100)

If you want to use a range of cells:

=INDEX($B$2:$B$6,RANDBETWEEN(1,5))

Answer 2

A quick and easy way would be to first make a lookup list like this:

Then in your column do a formula like this:

=VLOOKUP(ROUND(RAND()*10,0),$A$7:$B$16,1,FALSE)

where the $A$7:$B$16 is where your list is at. It can be on a different tab, or separate file, if you really need to isolate it.

You could also create a custom VBA function too, but I think that is beyond what you are looking for.