Given Any 40 People, Prove That at Least Four of Them

question 178

Short Answer

Given any 40 people, prove that at least four of them were born in the same month of the year.

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Definitions:

Credit Card

A financial instrument that allows the cardholder to borrow funds from a pre-approved limit to pay for goods and services.

Money Supply

The entire sum of monetary holdings accessible in an economy at a certain period.

Travelers Checks

Preprinted, fixed-amount checks designed to allow the person signing them to make payments or exchange for local currency, used mainly by travelers to protect against theft or loss.

M1 Balance

The most liquid components of the money supply, including physical currency, demand deposits, and other assets that can quickly be converted to cash.