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?

What does the below image rebus riddle means ?

John is the son of Jacob.
So,
Jacob is the_____of John's father?

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

Once upon a time, there was a castle on a square island. The entire island was surrounded by a 14m wide trench. The Romans had wanted to invade the castle and had brought a few wooden planks along with them to facilitate themselves in crossing the moat. The planks were however found to be only 13m long.

The Romans still managed to cross the trench. How did they do it?

What is so fragile that saying its name breaks it?

I am the fastest animal but cannot climb the tree. What am I?

The more you take me, the more you leave me behind.
Who Am I?

Which number comes next in the number series?

2, 9, 30, 93, ?

Can you solve this amazing hard number series problem?
7, 8, 10, 12, 16, 18 ?