# 【Puzzle】向正方形区域扔硬币

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# 问题描述

## Coin-in-Square

In a common carnival game a player tosses a penny from a distance of about 5 feet onto the surface of a table ruled in 1-inch squares

If the penny (3/4 inch in diameter) falls entirely inside a square, the player receives 5 cents but does not get his penny back

Otherwise, he loses the penny
If the penny lands on the table, what is his chance to win?

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