I'm pretty sure the question is clearly asking about what percentage of the ticket cost goes back to players as prizes. About 50% has been fairly standard, though some games pay a bit more.
That's a convenient statistic, and I'll often say that your long term results will probably be losing half of your money, but that's an optimistic simplification. Smaller jackpot games may vary, but while PB and MM put about 50 cents on the dollar into the prize pool, almost 40 cents on the dollar goes towards the jackpotand the 2nd place prize. That leaves about 10 cents on the dollar for prizes with odds that aren't high enough that even over a lifetime there's only an extremely slim chance of winning. For many games the exceedingly likely result hapening to most players is that they lose 90% of the money they bet.
Pretty much so, except for the aforementioned jackpot games, which are less. Pick 3, Pick 4 and other fixed-amount games are generally geared for 50% payout percentages. Some jurisdictions up that to 60%. Rule of thumb is that 50% of wagers are returned to the players, 15% cover the cost of running the game and 35% goes to the jurisdictions as profit.