Math

# The Josephus Problem Is A Theoretical Math Puzzle

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The story of the Josephus problem deals with math, life, and death. The problem goes as follows: There are x amount of people sitting in a circle waiting to be executed. They begin counting around the circle in a fixed direction. After every x number of people counted, one is executed. Where should you sit to survive? The video below details the problem and presents the solution.

#### The Josephus Problem

According to legend, getting it right was a matter of life and death.

##### The Josephus Problem - Numberphile
Numberphile – Numberphile

#### The Uncracked Problem With 33

What's the matter with this seemingly common number?

##### The Uncracked Problem with 33 - Numberphile
Numberphile – Numberphile

#### The Opposite of Infinity

You may think it would be negative infinity...

##### The Opposite of Infinity - Numberphile
Numberphile – Numberphile

### Key Facts In This Video

1. The opposite of infinity would be the smallest number possible. 00:01

2. Infinitesimals were important to Leibniz and Newton when they invented calculus. 06:37

3. Limits can be used to work out the area below a curve without having to use infinitesimals. 10:36