If a wheel has 54 spokes, how many spaces are there between the spokes?

Place the numbers from 1 to 9 in the circles in a manner that each side of the triangle sums up to 17.

Mr Red Lives in the red house.
Mr Green Lives in the greenhouse.
Mr Yellow Lives in the yellow house.

Who lives in the Whitehouse?

A girl rode into a tourist spot out of the city on Thursday. She loved the place and decided to stay for a few days. She stayed for four days and then she left for back home on Thursday.

How can this be possible?

A doctor and a boy were fishing. The boy was the doctor’s son, but the doctor was not the boy’s father. Who was the doctor?

A detective visits his friend John just to discover that John's neighbour Dr Jacob was murdered. Dr Jacob, who is a mathematician wrote the murderer's name in a code word "Hcqtfz". There were five suspects
1. Ajit
2. Pankaj
3. Ganpat
4. Deenu
5. Hariya

The Detective was instantly able to find the murderer.
Can you?

What 5-letter word typed in all capital letters can be read the same upside down?

What am I?

Rectify the following equality 101 - 102 = 1 by moving just one digit.

Which letter of the alphabet has the most water?