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zhuklara [117]
4 years ago
13

The radio station manager will award a free stereo to a contest winner. There are 20 black stereos, 15 white stereos, 10 red ste

reos, and 5 silver stereos to choose from. What is the probability that the stereo randomly selected by the contest winner is NOT white?
Mathematics
1 answer:
Vedmedyk [2.9K]4 years ago
7 0

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 {50}_C_1 ways.

1  can nbe chosen out of 15 in {15}_C_1 ways.

So the probability that the chosen sterio is white =\frac{ {15}_C_1 }{{50}_C_1} =0.3\\

So the probability that the chosen sterio isNOT  white =1-0.3=0.7

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