Posted by **Rodney** on Sunday, May 1, 2011 at 5:18pm.

A certain drawing states that the odds of winning are 15:270. What would be the odds against winning?

- Math/Statistics -
**Anonymous**, Sunday, May 1, 2011 at 9:02pm
270-15 = 255

odds of losing = 255:270

NOTE: odds of winning + odds of losing should= 1

- Math/Statistics -
**Rita**, Friday, June 3, 2011 at 8:51am
270:15

There must be 285 results, 15 that win, and 270 that lose.

- Math/Statistics -
**Rita**, Friday, June 3, 2011 at 8:59am
As I understand it, the May 1 answer from Anonymous is talking about probability, not odds. The probability of winning is 15/270 which reduces to 1/18. The probability of losing is 255/270 which reduces to 17/18.

Odds are wins to losses, 15:270 or 1 to 18. So the odds of losing are 270:15 or 18 to 1.

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