Why do you find that most of the buildings are deprived of the 13th floor?

The dirtier I get, the whiter I look. Who am I?

How many times in a given day, minutes and hour clock comes in a straight line ?

What question can you never answer yes to?

What breaks yet never falls, and what falls yet never breaks?

Thirty friends were on a hiking trip when they decided to enjoy the bonfire. They assembled for it and agreed to play a game. For that, they divided themselves into five teams with seven members each, forming five rows.

How did they manage to achieve this formation?

When it is alive we sing, when it is dead we clap our hands. What is it?

On a charity event in Russia, Murray beat Djokovic by winning six games and losing three games.
Note: There is a total of 5 service breaks(one who serve lost the game).
Who served first, Djokovic or Murray?

Which fur should we be getting from the Lion?

There are people and strange monkeys on this island, and you can not tell who is who (Edit: until you understand what they said - see below). They speak either only the truth or only lies.
Who are the following two guys?
A: B is a lying monkey. I am human.
B: A is telling the truth.