Question

The odds in favor of an event are 2:9 What are the odds against the event?

Answer 1

We have that the odds in favor are 2 : 9, we can also write it like this:

`2\colon9=(2)/(9)`

now, the odds agains the event is the complement of the odds in favor, then:

`1-(2)/(9)=(7)/(9)`

therefore, the odds against the event are 7:9