In the Italian lottery, ninety numbers, 1-90, are always put into the wheel.

Five only of these are drawn out.

The player bets that a number named by him shall be one of these (_semplice estratto_); or that it shall be the first drawn (_estratto determinato_); or that two numbers named by him shall be two of the five drawn (_ambo_); or that three so named shall be drawn (_terno_).
It will be seen, therefore, that the winner of an _estratto determinato_, ought, if the play were quite even, to receive ninety times his stake.

But, in fact, such a player would receive only seventy-five times his stake, the profit of the Government consisting of this pull of fifteen per ninety against the player.

Of course, what he ought to receive in any of the other cases is easily (not by me, but by experts) calculable.