Before Mount Everest was discovered, what was the highest mountain in the world?

What has many teeth, but cannot bite?

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

There was a competition where the contestants had to hold something. At the end of the event, the winner was a person who had no hands or feet. What was it that the contestants had to hold?

What has a ring but no finger?

Find the missing number in the image below.

Solve the following series:
AZ, GT, MN, __, YB

How many triangles are there on the puzzle below?

I am white when I am dirty, and black when I am clean. What am I?

I am an odd number. Take away a letter and I become even. What number am I?