Take away the whole and some still remain. What is it?

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

You see a boat filled with people, yet there isn’t a single person on board. How is that possible?

I am quite hot but become too cold if you remove the first two letters. What am I?

A blonde put eyeliner on her head. Why?

Once while in his court, King Akbar asked Birbal to write something on a wall that makes one sad when read in good times and makes one happy when read in sad times.

He took only a few moment and wrote something that fit the requirements. What did he write?

Can you spot the hidden girl in the picture below?

My friends called me Iron59 because my parents are a chemist and a mathematician. What is my real name?

It walks on 4 when its young, walks on 2 when it's older, and walks on 3 when its very old?

When I got four, I have it none.
When I got two, I have it some.
When I got none, I have it all.

What is it?