I only have two backbones and thousands of ribs. What am I?

Answer: A railroad.

Solution:

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A railroad.

Why did the scientist put a knocker on his door?

Answer: Because he wanted the No-bell Prize.

Solution:

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Because he wanted the No-bell Prize.

Why do chickens lay eggs?

Answer: Because if they drop them, they will break.

Solution:

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Because if they drop them, they will break.

If you drop a yellow hat in the Red Sea, what does it become?

Answer: Wet, duh!

Solution:

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Wet, duh!

Turn us on our backs and open up our stomachs you will be the wisest of men though at start a lummox.

Answer: Book

Solution:

Find the missing number in the sequence 7 5 8 4 9 3 ?

Answer: 10

Solution:

Explanation:

7 minus 2 is 5.

5 plus 3 is 8.

8 minus 4 is 4.

4 plus 5 is 9.

9 minus 6 is 3.

So the logical choice, being that the mathematical function switches between addition and subtraction, while the integer increases by 1,