It is unlikely you will be asked, but anyway...
Shhhhhhhhhhhhhhhh.
I will tell you why!
If you admit to having flown a jet simulator beforehand then some other bright spark on the selection day will ask if you can go first, because you have had prior experience, so that he can observe.
You do not want this to happen. You want him to go first so that you can sit in the jump seat and watch his mistakes.
The odds are more in your favour if you elect to toss a coin. The odds are much more in your favour if you have observed someone else making a mess of the mini test.
Good luck!
Suffice to say that on all the numerous assessment simulator checks which one has failed; there has never not been another candidate in the simulator.