4个问题，谁会回答？

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Q1. How can you drop a raw egg onto a concrete floor without cracking it?

Q2. If it took eight men ten hours to build a wall, how long would it take four men to build it?

Q3. If you had three apples and four oranges in one hand and four apples and three oranges in the other hand, what would you have?

Q4. How can you lift an elephant with one hand?

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