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On an upcoming expedition to Mars, there are 16 candidate astronauts
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On an upcoming expedition to Mars, there are 16 candidate astronauts, 7 humans and 9 androids (i.e. intelligent human-like robots), to choose from, and each can fill any role in a crew.
a. Suppose a crew consists of five roles: captain, navigator, doctor, engineer, and technician. If every role must be filled by a different astronaut, how many ways can a crew be chosen from the 16 astronauts?
b. How many different crews have
1. an android as captain?
2. exactly one android on the crew?
3. at least one android on the crew?
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[Solved] On an upcoming expedition to Mars, there are 16 candidate astronauts
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- Submitted On 12 Jul, 2020 06:24:41
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- Beam777
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On an upcoming expedition to Mars, there are 16 candidate astronauts
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