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# Getting Around

What number comes next in this series

88 225 365 687 ?

88 225 365 687 ?

### Hint

Kepler knew the answer.### Answer

4332The series is the number of Earth days it takes the planets to orbit the sun. Mercury takes 88 days, Venus 225, Earth 365. Mars 687, Jupiter takes 4332 or just under 12 earth years.

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