Some statistical guessing to make you think.

Do you like to think about big numbers? We thought so. Guess the answers to these big-number questions.

1. How many countries are there in the world today?
2. How many languages are spoken today?
3. How many people are on Earth?
4. According to the UN, what is likely to be the population of Earth in 2100?
5. How many stars are in the Milky Way?
6. How many potentially habitable exoplanets are there in our galaxy?
7. How long does it take to get to Mars?
8. How long does it take to get to Alpha Centauri?
9. How many humans have been in space?
10. How many spaceships do we have that are capable of taking us to another habitable planet?

Possible answers: 100 years, 7.5 billion, 0, 11 billion (twice), 100-400 billion, 196, 942 hours, 6,500, 553.

Numbers make our heads hurt. Click the picture for the answers.

Dmitri Gheorgheni

05.06.17 Front Page

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