Betting odds are written in the form 
("
to 
") and correspond to the probability
of winning 
. Therefore, given a probability
, the odds of winning are 
.
Odds
See also
Colon, Fraction, Ratio, Rational NumberExplore with Wolfram|Alpha
References
Kraitchik, M. "The Horses." §6.17 in Mathematical Recreations. New York: W. W. Norton, pp. 134-135, 1942.Referenced on Wolfram|Alpha
OddsCite this as:
Weisstein, Eric W. "Odds." From MathWorld--A Wolfram Web Resource. https://mathworld.wolfram.com/Odds.html