What percentage of the world’s airports are in the USA? (Answer below the fold.) Take a guess. Now, take another guess, different from the first one, and average them. According to research reported on in
Average Your Guesses
Average Your Guesses
Average Your Guesses
What percentage of the world’s airports are in the USA? (Answer below the fold.) Take a guess. Now, take another guess, different from the first one, and average them. According to research reported on in
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