French Police inspects a room where there are no windows, no doors, no tables and is almost empty expect there is just a puddle of water. They found a dead man who obviously hung herself from the ceiling, but they are not able to figure out how this had happened.

John and Jacob entered the crime scene and easily able to solve the case.

How did the man die?

I am a type of vehicle that has two wheels and is powered by humans. What am I?
Hint 1: You can ride me for exercise.
Hint 2: I am environment-friendly.

What number do you get when you multiply all of the numbers on a telephone's number pad?

What goes through cities and fields, but never moves?

In a mathematical quiz, you are asked the following question:

Use three 9s in a mathematical expression without dividing or multiplying to form the number one.

Can you answer the question?

How can you throw a ball as hard as you can and have it come back to you even if it doesn't hit anything there is nothing attached to it and no one else catches or throws it.

What does this mathematical rebus means ?

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

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

I speak without a mouth, and hear without ears. I have no-body, but I come alive with the wind. What am I?