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

What has lots of eyes, but can’t see?

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?

10+10 and 11+11 can give you the same answer.

Explain how?

When is the top of a mountain similar to a savings account?

On the dull night when the blonde was dozing, she heard an odd clamour and she saw that there was a bizarre man with a gun simply outside her home. So she raced to the telephone to call the police, however, she can't dial 911. Why?

It's a protector.
It sits on a bridge.
One individual can see directly through it, while others wonder what it hides.

What is it?

What has six faces, but does not wear makeup, has twenty-one eyes, but cannot see? What is it?

If you had a pizza with crust thickness 'a' and radius 'z', what's the volume of the pizza?

What has one eye, but can’t see?