Lottery is a game of chance in which a prize is allocated to a certain class of persons by a process which depends wholly on chance. Prizes may consist of money, goods or services and may also be a combination of those.
The earliest known European lottery dates to Roman times, when wealthy nobles gave away property and slaves at Saturnalian feasts as part of the entertainment. Later, private lottery games were common as a way to raise funds for the construction of American colleges, including Harvard, Dartmouth, Yale, William and Mary, King’s College (now Columbia) and Union. Benjamin Franklin sponsored a lottery during the American Revolution to finance cannons for defense of Philadelphia, and Thomas Jefferson attempted to hold one before his death to alleviate crushing debt.
The key to winning the lottery is selecting tickets that cover most of the combinations in the draw. This is called a “dominant group.” A mathematical formula developed by Stefan Mandel, who won 14 times in a row, suggests that if you play the dominant groups, your odds are higher than if you avoid them. The rule isn’t foolproof, and some numbers are more popular than others, but it can help improve your success-to-failure ratio. Another trick is to choose numbers that are not close together; if they’re all in the same cluster, you’re less likely to win. Avoid numbers that end in the same digit, and don’t play more than three evens or odds.