What is the coolest letter in the alphabet?

What is the last thing you take off before bed?

It's a protector.
It sits on a bridge.
One individual can see directly through it, while others wonder what it hides.

What is it?

He runs but never walks. Murmurs, but never talks. Has a bed, but never sleeps. And has a mouth, but never eats?

A boy was locked in a room by some robbers. All that is in the room is a piano, a calendar, and a bed. The room is locked from the outside. What does he eat, drink, and how does he escape and get out?

If you had a pizza with crust thickness 'a' and radius 'z', what's the volume of the pizza?

Can you start the fire using two pieces of wood?

First, think of the colour of clouds. Next think the colour of snow. Last, think of the colour of the moon. Now, what do cows drink?

There are forty elephants and they have forty-fore heads. How can this be possible?

Prove that the below maths equation is true.

8 + 8 = 91