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?

Prove that the below maths equation is true.

8 + 8 = 91

Through your logical capabilities, can you make 7 an even?

How can you make the following equation true by drawing only one straight line: 5+5+5=550 ?

What is the riddle which can be asked all day with a different correct answer each time.

Speaking of rivers, a man calls his dog from the opposite side of the river. The dog crosses the river without getting wet, and without using a bridge or boat. How?

Who has married many women but was never married?

A mules travels the same distance daily.
I noticed that two of his legs travels 10km and the remaining two travels 12km.
Obviously two mules legs cannot be a 2km ahead of the other 2.

The mules is perfectly normal. So how come this be true ?

When is the top of a mountain similar to a savings account?

Yesterday I fell from 30 feet high ladder but I don't get hurt. Why?