f you were running a race, and you passed the person in 2nd place, what place would you be in now?

What has many teeth, but cannot bite?

Assume there are approximately 5,000,000,000 (5 billion) people on Earth. What would you estimate to be the result, if you multiply together the number of fingers on every person's left hand? (For the purposes of this exercise, thumbs count as fingers, for five fingers per hand.) If you cannot estimate the number then try to guess how long the number would be.

What number when divided in half becomes zero?

using four eights (8) and a one (1) and one mathematical symbol , create the number 100

A Man gave one of his sons 10 cents and another son was given 15 cents. What time is it?
Hint: Figure out the relation between time and number, is not so easy..:)

Why Aeroplane windows are round?

Find the next number in the sequence

5 12 24 36 ?

On a bright sunny day, two fathers took their son fishing in the lake. Each man and son were able to catch one fish. When they returned to their camp, there were only three fishes in the basket. What happened?

PS: None of the fish were eaten, lost, or thrown back.

If I remove one from eleven it becomes Ten and if I remove one from nine also becomes Ten. How?