Knoydolig Llawen wrote:How do odds work?
You've already had a couple of good answers but I wanted to say that in maths, odds are actually supposed to be a way of representing the probability. Mathematical odds of 1:200 indicate the event happens 200 times in every 201, whereas odds of 40:1 indicate the event happens 1 time in every 41.
In betting, odds do not precisely represent probabilities. They are based on the bookies' assessment of the probability of the event, but also adjusted to entice people to take out bets and ensure there is an overall profit. Betting odds do however represent payout, so if you bet £10 on 40:1 odds, you would get £400 payout plus your original £10 if you won the bet.