Problem 5. On a distant alien planet, a full year lasts 5 days. The distribution of birthdays of the aliens who live on this planet is uniform. What is the probability that, if we randomly choose 3 aliens from this planet, at least 2 of them will have the same birthday? Explain.

A First Course in Probability (10th Edition)
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ISBN:9780134753119
Author:Sheldon Ross
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Chapter1: Combinatorial Analysis
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Problem 5. On a distant alien planet, a full year lasts 5 days. The distribution of birthdays of the aliens who live on
this planet is uniform. What is the probability that, if we randomly choose 3 aliens from this planet, at least 2 of
them will have the same birthday? Explain.
Transcribed Image Text:Problem 5. On a distant alien planet, a full year lasts 5 days. The distribution of birthdays of the aliens who live on this planet is uniform. What is the probability that, if we randomly choose 3 aliens from this planet, at least 2 of them will have the same birthday? Explain.
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Given that, on a distant alien planet, a full year lasts 5 days. The distribution of birthdays of the aliens who live on this planet is uniform.

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