a celebration within a group, each person handshakes some people. Using the Pigeonhole Principle, prove that there must be two people within the group who handshake the same number of p

Database System Concepts
7th Edition
ISBN:9780078022159
Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Chapter1: Introduction
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In a celebration within a group, each person handshakes some people. Using the Pigeonhole Principle, prove that there must be two people within the group who handshake the same number of people.

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Can you write it more in a proof format, thank you.

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