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Lilit [14]
3 years ago
11

From a group of 21 astronauts that includes 12 people with previous experience in space flight, a 3-person crew is to be selecte

d so that exactly 1 person in the crew has previous experience in space flight. How many different crews of this type are possible?
Mathematics
1 answer:
Vladimir79 [104]3 years ago
8 0

Answer:

3

Step-by-step explanation:

because  

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