One cent doubles every day for 30 days. How many euros do you end up with?

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The answer

10.7 million euros

Over 10.7 million euros. After 20 days it was only about 10,000.

How to get there

1. 10 doublings: ×1,000. 30 doublings: ×1 billion
2. 1 billion cents = about 10 million euros

Source: Calculation

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