< snip >
>No, it's just a simple game. If you have somebody near you, you can play. Two players say aloud numbers, I just gave a sample of the two players and possible numbers. Each number should be greater than the previous (from 1 to 10). E.g. I can say 5, and you can say 15 (or 6,7,8, etc). The first player, who says 100 (but you can play for 200 or any number, you define), will win.
>
>My question is: who will win, if there is a strategy in this game, and what should be this strategy?

I think the solution is.

Iif( Mod(NUMBER_TO_REACH,1000) = 0, 1, Mod(Mod(NUMBER_TO_REACH, 1000 ),11 ) )