A lottery is a type of gambling in which the drawing of specific numbers for a specific prize is randomly chosen. The probability of winning in such lottery games is not fixed. Lottery winners can be anyone; there is no age limit, and people who win a lottery may live or die in any country. In some countries, lottery jackpots are subject to tax.
While some governments prohibit lotteries altogether, others endorse it as much as the extent of regulating a state or national lottery. It is also common to find some level of regulation of lottery prizes by many governments. The expected utility theory states that winners should be provided with as much net gain as they would have earned without gambling, and the expected value of future lottery prizes should take into account the amount of time, effort, and money spent on acquiring them. This implies that people should be compensated reasonably for their participation in lotteries.
If a person wins a lottery because he bought the wrong number of lottery tickets, this may entitle him to a share of the jackpot. This is called a prize share. Also, if a person wins a lottery through his/her wit or luck, he may be entitled for a tax relief.