10 people came into a hotel with 9 rooms and each guest wanted his own room. The bellboy solved this problem.
He asked the tenth guest to wait for a little with the first guest in room number 1. So in the first room, there were two people. The bellboy took the third guest to room number 2, the fourth to number 3, ..., and the ninth guest to room number 8. Then he returned to room number 1 and took the tenth guest to room number 9, still vacant.
How can everybody have his own room?

While going to your grandmother's house, you counted Twenty houses on the right side. While returning back to your home, you counted Twenty houses on the left side.

How many houses are there between your home and your grandmother's home?

I am a type of vehicle that has two wheels and is powered by humans. What am I?
Hint 1: You can ride me for exercise.
Hint 2: I am environment-friendly.

Can you Find and name the hidden bird in the picture below ?

Place a mathematical symbol between the numerals 5 and 9 in such a way that the resulting number is greater than 5 but smaller than 9.

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

With the help clues provided in the image, can you find the 5 digit key?

John named his first son Alpha, second Beta, third Charlie and fourth Delta. What is the fifth son's name?

A Doctor always sneezes before the rain. Doctor sneezes, Will it rain?

Our product and our sum always give the same answer. Who are we?