When Jack was six years old he hammered a nail into his favourite tree to mark his height. Ten years later at age sixteen, Jack returned to see how much higher the nail was. If the tree grew by five centimetres each year, how much higher would the nail be?

A man lives on the fifteenth floor of an apartment building. Every morning he takes the elevator down to the lobby and leaves the building. In the evening, he gets into the elevator, and, if there is someone else in the elevator, or if it was raining that day, he goes back to his floor directly. Otherwise, he goes to the tenth floor and walks up five flights of stairs to his apartment. Can you explain why he does this?

In a boat, the father of a sailor's son is sitting with the son of the sailor. However, the sailor is not present on the boat.

Can this even be possible?

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

If 1+9+8=1, what is 2+8+9?

Can you identify the hidden rebus in the image below?

Find out which of the given views in the picture is accurately the top view of the given pyramid.

Here is a mathematical expression that also secretly tells a movie name. What movie is that?

Find the Odd One Out?
84129
32418
47632
36119
67626
72927

A boy was driving a car, a girl took a lift from her. She asked his name. The boy said - my name is hidden in my car’s number, find it if you can. After this, she got down Car number was [ WV733N ] Can you guess the name now?