In the city of Brain Teasers, 5% of people do not list their phone numbers. Now if we select random 100 people from the phone directory, then how many people selected will have unlisted phone numbers?

A man who was outside in the rain without an umbrella or hat didn’t get a single hair on his head wet. Why?

Transform the word THINK into BRAIN while changing only one letter at a time in a manner that each of the word in the process is a real word!!!

What mathematical symbol can be put between 5 and 9, to get a number bigger than 5 and smaller than 9?

What can jump higher than a building?

What you cannot hold but it is yours?

Can you find a five letter word that is left with only two letters if one is removed?

What number comes next in this sequence:
7 8 5 5 3 4 4 _

Here is a mathematical expression that also secretly tells a movie name. What movie is that?

If we tie a Sheep to one peg, a circled grass is been eaten by the Sheep. If we tie the Sheep to two pegs with a circle on its neck, then an eclipse is eaten out of the grass by the Sheep. If we want an eclipse then we put two pegs and then put a rope in between them and the other end of the rope is tied up on the Sheep's neck.

How should we tie the peg and the Sheep so that a square is eaten out from the garden grass? We only have one Sheep rope and the peg and the rings.