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

What is the word or phrase?

How many times can you subtract the number two from the number fifty?

You are a prisoner sentenced to death. The Emperor offers you a chance to live by playing a simple game. He gives you 50 black marbles, 50 white marbles, and 2 empty bowls. He then says, 'Divide these 100 marbles into these 2 bowls. You can divide them any way you like as long as you use all the marbles. Then I will blindfold you and mix the bowls around. You then can choose one bowl and remove ONE marble. If the marble is WHITE you will live, but if the marble is BLACK... you will die.'

How do you divide the marbles up so that you have the greatest probability of choosing a WHITE marble?

I have a hole in my back and legs I lack.
I live where I can’t breathe and I eat without teeth.
What am I?

A large container is kept in open under the rain. Every passing hour, the water collected inside the container becomes double what it was.

In ten hours, the container is filled completely. Can you calculate how long would it have taken to be filled in half?

A mad serial killer kidnaps people and forces them to play the game of 2 pills with them, In this game, there are pills in the table and one of them is normal pill while the other one is deadly poisonous.
The victim will choose one pill and the killer will pick the other pill and both simultaneously will swallow the pill with water.
victim dies every time.

One day the serial killer kidnaps the Joseph and forces him to play the same game with him.

Joseph solves the mystery of the two pills and remains alive.

Explain?

Double it and multiply it by 4. Then divide it by 8 and you’ll have it once more. What number is it?

Is the statement valid that it does not matter how much older a sibling is, eventually the younger one will be half as old as the older one?

It belongs to you, but other people use it more than you do. What is it?