What is the centre of gravity?
Can you start the fire using two pieces of wood?
Why is it very easy to weigh a fish?
What has six faces, but does not wear makeup, has twenty-one eyes, but cannot see? What is it?
A father is locked up in jail. His wife has gone bankrupt. Their male child has to sell his hotel in order to gain some money. Yet their girl child does not care and is quite happy. How can someone be so rude?
They are the five precious gems of an everyday sort and all can be found on a Tennis Court. Who are they?
What can you hold in your right hand, but never in your left hand?
Can you solve the below algebraic mathematical equation? (J+O+I+N+T)3 = JOINT
Why Wine Glass Stem is so long?
Why do Chinese men eat more rice than Japanese men do ?
What always comes into a house through the keyhole?
There is a cryptic organization called Cicada 3301 that posts challenging puzzles online, possibly to recruit codebreakers and linguists.