A gumball machine contains 200 gumballs, 45 of which are black. What are the odds against getting a black gumball out of the machine?
To find the odds against getting a black gumball out of the machine, first calculate the number of gumballs that are not black.
There are 200 total gumballs in the machine, and 45 of them are black. Therefore, the number of gumballs that are not black is 200 - 45 = 155.
The odds against getting a black gumball can be expressed as the ratio of the number of non-black gumballs to the number of black gumballs.
So, the odds against getting a black gumball out of the machine are 155:45.