Think of a Number
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Think of a Number

A light-hearted exploration of maths and science, presented by Johnny Ball.

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5. The Shape of Wealth

0.0May 10, 1978 · 30 min

This week Johnny discovers some dicey things about dice and a number over a thousand miles long; also something heavy about gold and cutting about diamonds. Meanwhile - Think of a Number. By using two minus and one plus signs make this all add up! 123456789 = 10