There are 7 sports channels and 5 movie channels available for subscription. 4 channels are randomly selected from these channels to subscribe to. Find the probability that
a) a particular movie channel is selected
b) the numbers of sports channels and movie channels selected are the same.
Probabilities?
2020-12-11 11:28 pm
回答 (1)
2020-12-12 12:45 pm
An apple a day keeps the doctor away. ... ... ... ... ...
收錄日期: 2021-04-23 23:49:03
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