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Interesting Fact - The equals sign

The = sign was invented by 16th Century Welsh mathematician Robert Recorde, who was fed up with writing "is equal to" in his equa...

Interesting Fact - Harry Potter

The French translation of the bestselling book Harry Potter and the Half-Blood Prince has an extra 120 pages.

( The reason is that French is a less concise language than English, but does it mean it's more expensive in France?)