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

What animal walks on four legs in the morning, two legs during the day, and three legs in the evening?

Oedipus, the king of Thebes, figured out the answer to the riddle:

Take 9 from 6, 10 from 9, 50 from 40, and leave 6.

How Come ??

Out of three Friends John, Jacob and Jonny one of them is a king, one is a bureaucrat, and one is a Spy.

The king always tells the truth, the bureaucrat always lies, and the Spy can either lie or tell the truth.

John says: Jonny is a bureaucrat
Jacob says: John is a king
Jonny says: I am a Spy

Tell me, Who is the king, who is the bureaucrat, and who is the Spy?

What has a ring but no finger?

Find the missing number in the image below.

John left on a horse on Thursday , was gone for two days, and came back on Thursday after completing his work. How did that happen?

What are the next two letters in the following series and why?
W A T N T L I T F S _ _

*Hint: Check Puzzle Title

When monkey rotate the gear, which mark will be hit 1 or 2 ?

What is the centre of gravity?