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Estimation question

How many days does a person live who reaches 80?

How close can you get? Make your own guess and earn points before you look at the answer.

Guess it yourself and earn points
Show the answer and the reasoning

The answer

29,220 days

Only about 29,000 days. Fewer than most people think.

How to get there

  1. 80 × 365.25
  2. = 29,220 days

Source: Calculation

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