Parlays are the most popular of the exotic wagers, as they offer the prospect of a significant payout on a small wager. Simply stated, a parlay is a collection of two or more sides or lien which you gamble on and they all must win in order that you win your wager. Moving 3-1 is not any different than going 0-4, if you place a parlay. In order that you win, all your bets must win, or tie.
There are types of parlays, those wagered from the point spread and people wagered using the cash line. The payoffs that a bettor will receive should they win are very different in the two. Whilst the likelihood of each group determine money line parlay payoffs in parlays involving point spreads, the payoff is adjusted.
Point Spread Parlays
The odds on a parlay involving stage spreads, such as totals, are something like:
2 teams 13-5
3 teams 6-1
4 teams 10-1
5 teams 25-1
6 teams 40-1
Seven groups 75-1
8 groups 150-1
9 teams 300-1
10 teams 600-1
This means is that if all of their games win, a bettor making a wager on a five-team parlay stands to win $ 25, while a will pay out $150 for each $ 1 wagered. The capacity to acquire a lot of cash is the reason parlays are popular with a number of sports bettors.

Read more here: http://boranadevelopment.com/?p=18829