The radio station manager will award a free stereo to a contest winner. there are 20 black stereos, 15 white stereos, 10 red stereos, and 5 silver stereos to choose from. what is the probability that the stereo randomly selected by the contest winner is not white?

Solution:

we are given that

The radio station manager will award a free stereo to a contest winner. There are 20 black stereos, 15 white stereos, 10 red stereos, and 5 silver stereos to choose from.

we have been asked to find

The probability that the stereo randomly selected by the contest winner is NOT white?

Total number of stereo=50

Total number of white stereo=15

1  can nbe chosen out of 50 in ways.

1  can nbe chosen out of 15 in ways.

So the probability that the chosen sterio is white

So the probability that the chosen sterio isNOT  white

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