10 1 Odds Meaning
Convert betting odds to probability. Now we want to see what those odds mean in terms of probability. There is another simple formula that takes the numbers in a fractional odds presentation, adds them together and then divides that total by the second number to give a probability factor. So for Barcelona at 4/6 that is 4+6=10 and then 10 divided by 6 = 1.6 then multiply that by 100 = 60%. For example, if one were to bet $1 at 10 to 1 odds (one could win $10) on the outcome of a coin flip, one would be getting 'the best of it' and should always make the bet (assuming a rational and risk-neutral attitude with linear utility curves and have no preferences implying loss aversion or the like).
By convention only a set of fractions are used in fractional odds betting markets. The set does not include exact mathematical equivalents to all possible decimal and American odds. We use the closet fraction that is used in betting markets.
10 11 Odds
For example, the exact mathematical equivalent of decimal odds 30 is fractional odds 29/1. However 29/1 is not used in betting markets, instead 30/1 is used, so that is what appears in this converter.
For an explanation of the odds types on this table see decimal, fractional and American odds. To find out what the numbers really represent see understand odds as probability with overround.