John gave half of the apples he had plus one more to Jacob. He gave half of the remaining ones plus one more to James. Now, John was left with just one apple.

Can you find out how many did he have in the beginning?

There was a minor accident with a doctor's son but the doctor noticed no major injury. After the treatment, the father of that doctors son is sitting with the son of the doctor without the doctor being in the room.

How can this be possible?

What's the only room from which no one can enter or leave

Look at the picture and find out which square is not linked with any of the other squares.

There’s a girl who has a large family. She has an equal amount of brothers and sisters, but each brother only has half as many brothers and sisters. What’s the correct amount of brothers and sisters?

What is the best name for Gambler Girl Friend?

Can you find out what is missing?

1 3 5
2 4 ?

Hint: It's not six. Think out of the box.

In 1990, a person is 15 years old. In 1995, that same person is 10 years old. How can this be?

I can be made.
I can be cracked.
I can be told.
I can be played.

Who am I?

You and your two friends are working in a multinational company. How can you three find out the average salary of you all without disclosing your own salary to the other two?