Replace the question mark with the number below given a simple math problem.

Suppose we lay down two cups in front of you. One of the cups is filled with tea and the other one with coffee. Now we ask you to take a spoonful of tea and mix it with the coffee. At this moment, the coffee cup has a mixture of tea and coffee. You have to take that mixture (spoonful) and add it back to the tea.

Can you now tell if the cup of coffee has more tea or the cup of tea has more coffee?

A king sentenced a man to the death sentence for some crime he had committed. Known for his kindness, the king told the culprit that he had a choice to die in a way he decides.

The culprit was clever and said something that saved him from death. What method do you think he must have chosen for his death?

A Shopkeeper sold a few chickens to four different customers on a particular day. It was such that each customer purchased half of the remaining chickens and half the chicken more.

Can you find out how many chicken were sold by the shopkeeper on that day if we tell you that the fourth customer bought a single chicken ?

Name a key which is hardest to turn.

What has lots of eyes, but can’t see?

What can jump higher than a building?

What word is identified by the below rebus?

Your Your Your Your Your
Your Your Your Your Your

When it is alive we sing, when it is dead we clap our hands. What is it?

They came out at night, without being called.
They lost at day, without being stolen.
Who are they?