National lotteries are government-sanctioned games of chance where participants buy tickets for a chance to win cash prizes. The proceeds from ticket sales often support public services, such as education, health care, and infrastructure. Each lottery has its own rules, including how numbers are drawn and how prizes are awarded. Players typically select a set of numbers or purchase quick-pick tickets, where numbers are randomly generated. Drawings are held at regular intervals, and winners are announced publicly. Popular examples of national lotteries include the Powerball and Mega Millions in the United States, which offer large jackpots and attract millions of players.