What number when divided in half becomes zero?

A pack of cards has 40 cards. You are blindfolded. Out of 40, 25 cards are facing down while 15 are facing up. You have been asked to divide this pack of cards into two decks - so that each deck contains an equal number of face-up cards. Remember, you are blindfolded.

How will you do it?

I’m tall when I’m young, and I’m short when I’m old. What am I?

I am not alive, but I grow; I don't have lungs, but I need air; I don't have a mouth, but water kills me. What am I?

There's one "sport" in which neither the spectators nor the participants know the score or the leader until the contest ends.

What is it?

A maths symbol is hidden in the below Bar Graph. Can you decipher it?

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

A man has a barrel filled with oil that weighs 100 pounds, and then he puts something into it. Now the barrel weighs less than 100 pounds. What did he put in the barrel?

You see a mathematical expression in the picture. Can you think of a movie that this expression refers to?

The measurement of time, That can't be found on a clock, But can be looked upon on a map.

Who is He ?