There are hundreds of games to bet on in any particular week during the college basketball season, and the most popular bet is on the point spread.

For this game, Duke would have to win by 3 points or more to cover the spread. If North Carolina won or lost by 2 points or less, Tar Heels bettors would cash their ticket.

Other than the point spread, the over/under (or “total”) is the most common bet. Sportsbooks set a line for combined points by both teams and bettors can wager whether the final score will be over or under that total.

There are also moneyline bets, which removes the point spread but changes the odds on each team.

A $100 bet on UCLA would return $250 if the Bruins won straight up. Arizona bettors would have to lay $280 to win $100, but the Wildcats would only have to win the game and not cover a point spread.

The first two rounds of the NCAA men’s basketball tournament has become a popular weekend in Las Vegas. Fans come from around the country to bet on March Madness.

During the tournament, sportsbooks will offer odds on who will win each region and make the Final Four. Fans can bet on who will win the championship, and those odds are generally offered year-round.