What famous saying does this rebus mean?

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Why do you find that most of the buildings are deprived of the 13th floor?

What is more useful when it is broken?

1. How can we put an elephant in the refrigerator?
2. How can we put a Giraffe in a refrigerator?
3. The king of the jungle invites all the animals to a party everyone comes except for one animal, which animal?
4. You come to a crocodile-infested lake, you can't go around it, you can't co under it and you can't go over it, how do you get across?

If you remove one from eleven, it becomes ten. If you remove one from nine, it becomes ten.

How is this possible?

You have four chains. Each chain has three links in it. Although it is difficult to cut the links, you wish to make a single loop with all 12 links. What is the fewest number of cuts you must make to accomplish this task?

If you say my name, I will no longer exist. What am I?

The product of three consecutive numbers is 7980.
Then the sum of these consecutive numbers would be?

The more it dries, the wetter it becomes. Can you tell what it is?

What does this rebus riddle means ?