what does the below math rebus puzzle mean?

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

Find the next number in the series below

21 32 54 87 131 ?

How many minutes are there in Feb 2017?

Note: The shortest answer is the correct answer.

The teacher told the student that if he told a lie then he will be expelled from school and if he told the truth then he still is expelled from school.

What can a student say to prevent his being expelled from school?

Your mother’s brother’s only brother-in-law is asleep on your couch. Who is asleep on your couch?

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?

What goes up but never comes down?

Why do people go to bed?

Two-person want to cross a river. Only one boat is present on the riverside that can carry only one person at a time.

However, they still manage to cross the river. How is it possible?