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In a certain small company, 8 people work in the morning, 7 people work in the...

In a certain small company, 8 people work in the morning, 7 people work in the evening, and 5 people work in the night time. The human resources manager selects 4 people from this entire group.

a) How many selections result in all 4 people coming from the morning group?

b) What is the probability that all 4 selected people will be from morning group?

c) What is the probability that all 4 selected people will be from the same group (either from morning, evening or night)?

Math   Statistics-And-Probability   
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