Consider the tax implications. In the United States, gambling winnings are taxable, but gambling losses are only deductible to offset winnings. This legal asymmetry may affect the math. The double draw promotion that resulted in a 20 percent player advantage before tax considerations is only profitable after taxes, provided the player can purchase the hundreds of tickets required to cover a significant fraction of the 1000 outcomes.
One example of this was the Missouri Lottery's promotion in the daily Pick 3. Normally a player has a 1/1000 chance of winning a $600 prize, making a $1 ticket worth only $0.60. The promotion was to draw a second winning combination on one randomly selected day of the week. Originally, the drawing to determine whether the bonus would occur that day held six white balls and one orange, but on the last day of the week, all six white balls had been removed, leaving only the orange ball and ensuring a double drawing on the last day.  This doubled the value of tickets for that drawing and converted them from an expected 40 percent loss to a 20 percent gain. See table 1 below for how the expected value varied that week.
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In the Mega Millions multi-state lottery, jackpots are split equally among all winners who match all numbers. If a player could ensure that he wouldn't have to split the jackpot, Mega Millions becomes a smart bet whenever the jackpot exceeds about $420 million, but this calculation doesn't account for the possibility of a split jackpot. It has been theorized that the ticket buying frenzies as the jackpot rises increases the likelihood of multiple winners sufficiently that the jackpot can never get large enough to give a ticket a positive expected value.
2 Power Play Prize Amount - A Power Play Match Five (5 + 0) prize is set at $2,000,000 regardless of the Power Play number selected. All other non-Grand prizes will be multiplied by the Power Play number selected.* Beginning with the October 7, 2015 drawing, prize tiers 3 - 9 will be multiplied by 2, 3, 4, 5 or 10 times when the Power Play feature is purchased.* The 10X Power Play multiplier will be available for drawings in which the initially advertised annuitized Grand Prize amount is $150 million or less. Click here to view the Power Play prize chart.
With all this talk about the odds against winning and how much money is wasted on lottery tickets, one may forget that people do win the jackpot once in a great while. Every now and then, we read about someone who won a huge jackpot of a few hundred million dollars and how he or she is planning on retiring, buying a new car, or giving a percentage to a favorite charity.
Players can either choose their own six numbers (five regular and one Powerball) or have the computer terminals randomly pick numbers for them. If every number on your ticket matches the winning numbers in the order they are drawn, you win the jackpot prize. There are also smaller prizes if you only have some of the correct numbers. Each ticket costs the player $1.
If you are a Jackpot winner in a state that requires your name be publicized, or if you choose to be known as a winner, or if your secret gets out unintentionally, the world will be waiting to meet its newest multimillionaire. Some people will simply be curious, while others will seek a cut of your fortune. Solicitors and the media will seek out your home, your workplace, and your friends and family. While this will not last long, you should leave town with your loved ones for a few days so that you can celebrate your life-changing event in private. Before you go, ask your attorney or spokesperson to handle any questions for you in your absence.