The centre of the third figure is empty. What digit should fit inside?

You see a mathematical expression in the picture. Can you think of a movie that this expression refers to?

Can you find the hidden animal in the picture below?

Why is the longest human nose just 11 inches?

You are a prisoner sentenced to death. The Emperor offers you a chance to live by playing a simple game. He gives you 50 black marbles, 50 white marbles, and 2 empty bowls. He then says, 'Divide these 100 marbles into these 2 bowls. You can divide them any way you like as long as you use all the marbles. Then I will blindfold you and mix the bowls around. You then can choose one bowl and remove ONE marble. If the marble is WHITE you will live, but if the marble is BLACK... you will die.'

How do you divide the marbles up so that you have the greatest probability of choosing a WHITE marble?

John’s parents have three sons: Snap, Crackle, and what’s the name of the third son?

You are stuck on an island where you have nothing. You find four pieces of paper somewhere on the island. What will be your strategy to escape from the island safely?

PS: No other resource is available to you on the island, neither can you build anything.

John and Jacob are twin brothers. One of them is a liar whereas the other one is a truth-teller.

I called their home number and one of them picked up.
I asked. 'Does John lie?' The person replied with a yes.

Whom did I talk with, John or Jacob?

If eleven plus two equals one, what does nine plus five equal?

Which statement is true out of the following?
One statement here is false.
Two statements here are false.
Three statements here are false.