What is the largest ocean in the world?, Which bird can fly backwards?, How many days are there in a leap year?, Who wrote Romeo and Juliet?, What planet is known as the Red Planet?, What has keys but cannot open doors?, What gets wetter the more it dries?, What has hands but cannot clap?, I speak without a mouth and hear without ears. What am I?, What comes once in a minute, twice in a moment, but never in a thousand years?, Who invented the telephone?, What is the tallest mountain in the world?, Which country is famous for sushi?, How many continents are there in the world?, What is the fastest land animal?.

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