In the city of Brain Teasers, 5% of people do not list their phone numbers. Now if we select random 100 people from the phone directory, then how many people selected will have unlisted phone numbers?

There is an English word that can be used up to four times in a row without modifying the spelling and form a valid grammatical sentence.

Do you know what word is that?

Can you count the number of seconds in a year?

Clue: You need to bother about calculation.

A man and a dog were going down the street. The man rode, yet walked. What was the dog’s name?

A father's child, a mother's child, yet no one's son.

Who am I?

Four men were in a boat on the lake. The boat turns over, and all four men sink to the bottom of the lake, yet not a single man got wet! Why?

The more it dries, the wetter it becomes. Can you tell what it is?

There are 2 people near the river and both of them want to get on the other side. The boat can only take one of them. But they got across.
How?

The Little ant seems to be always confused. Do you know why?

I was born in a small house and I live in it all alone. No windows and no doors have been assigned to my house. The only way I can go out is by breaking through the walls of my house.

Who am I?