Find the value of "?" in the ball picture Riddle below:

Can you find out the number that should replace the question mark with a valid reason?

You stand in front of two doors. A guard stands next to each door. You know the following things: one path leads to paradise, the other leads to death. You cannot distinguish between the two doors. You also know that one of the two guards always tells the truth and the other always lies. You have permission to ask one guard one question to discover which door leads to paradise. What one question would you ask to guarantee you enter the door to paradise?

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?

Can you find the missing number in the third row?
35 20 14
27 12 18
5 2 ?

There was an aeroplane crash, every single person died, but two people survived. How is this possible?

What is always in front of you but can’t be seen?

Why do people go to bed?

What is black when you buy it, red when you use it, and gray when you throw it away?

Count the number of balls in picture below: