How old is the planet Earth?

Posted in Trivia crack Science answers by trivia3 On December 29, 2014. No comments

Question: How old is the planet Earth?

Options: 

3.5 to 3.6 billion years
5.5 to 5.6 billion years
None of the above
4.5 to 4.6 billion years

Correct answer:

4.5 to 4.6 billion years

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