Question

Prove that if there are n≥2 people at a party, then at least 2 of them...

Prove that if there are n≥2 people at a party, then at least 2 of them have the same number of

friends at the party.

(Hint: The Pigeonhole Principle states that if n items are placed inmcontainers, wheren>m, at

least one container must contain more than one item. You may use this without proof.)

Math   Statistics-And-Probability   
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