Always in you, Sometimes on you;

If I surround you, I can kill you.

What am I?

What can you see in the middle of March and April that you can never see in any other month?

What's the only room from which no one can enter or leave

Two batsman each on 94 runs. Seven runs needed to win in last 3 balls. Both make 100*. How?

There are two guys standing face to face in a room. On a wall, there is a clock. One of those is a prophet. He tells the other guy that he will be stabbed in the back in five minutes.

Shocked to hear that, the other guy stares at the clock. Just after the five minutes, he is stabbed on the back. Can you tell what happened?

What makes this number unique: 8,549,176,320?

What number divided by 4 is the same as that number minus 4?

I don't get anymore wetter, no matter how much rain falls on me.

I always drive my customer away.

Who am I?

Baseball bat and ball cost $100. If the bat cost $99 more than the ball, what is the cost of each?