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## Numberphile - Videos about Numbers and Stuff

Short videos about numbers, maths and all sorts of other numbery stuff. We'll make you love numbers!

## Kaprekar Number -- from Wolfram MathWorld

Consider an -digit number . Square it and add the right digits to the left or digits. If the resultant sum is , then is called a Kaprekar number. For example, 9 is a Kaprekar number since

## Geeky pin numbers - Spiked Math

Geeky pin numbers - Spiked Math Comic - A daily math webcomic meant to entertain and humor the geek in you...

## 6174 (number) - Wikipedia, the free encyclopedia

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## Dudeney number - Wikipedia, the free encyclopedia

A is a positive that is a such that the is equal to the cube root of the number. There are exactly six such integers (sequence in ):

## Numbers

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## The Thirty Greatest Mathematicians

List of the Greatest Mathematicians Ever

## How maths killed Lehman Brothers

On a sunny morning in 2001, a piece of investment plan landed on the desk of Dick Fuld, the then Chief Executive of Lehman Brothers. The document, compiled by a team of maths and physics PhDs, included a calculation to show how the bank will always e...