Wonderopolis Wonder #375

Do You Think 13 Is Unlucky?

It's one more than 12. It's one less than 14. It's the square root of 169. What is it? 13, of course! If the mere mention of 13 makes you uneasy or nervous, you may suffer from triskaidekaphobia (tris´-kuh-dek´-uh-foh´-bee-uh) — fear of the number 13.

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