Can you make four (4) nines (9) equal 100?

What do you get if you add 2 to 100 four times?

They came out at night, without being called.
They lost at day, without being stolen.
Who are they?

You are on a Boat in the mid of a river. You have two cigarettes with you. One of these two you have to light, how will you light the cigarette?

There once were seven dwarfs who were all brothers. They were all born two years apart. The youngest dwarf is seven years old. How old is his oldest brother?

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?

In the picture that is attached with this question, you can find a square which comprises of four little squares inside it. Consider this square to be made with matchsticks. You have to remove two matchsticks such that only two squares remain instead of five.How will you do it ?

What occurs twice in a week, once in a year but never in a day?

I look at you, you look at me, I raise my right, you raise your left. What am I?

I have feet, but no legs. Which animal Am I?