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Simon Singh's Numbers Five Numbers Episodes Available now
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Infinity
Georg Cantor defined infinity as the size of the never-ending list of counting numbers.
The Imaginary Number
If the square root of +1 is both +1 and -1, then what is the square root of -1?
The Golden Ratio
The ratio of consecutive numbers in the Fibonacci is close to 1.618, the Golden Ratio.
Pi
At its simplest, Pi is the ratio of the circumference of a circle to its diameter.
Zero
Strangely, 'nothing' had to be invented, and then it took thousands of years to catch on.
