It is a six-letter word.
The first four letters are me.
The second and last letters are the same.
The fourth second and last letter is payment.

Who is it?

A woman lives in a skyscraper thirty-six floors high and is served by several elevators which stop at each floor going up and down. Each morning she leaves her apartment and goes to one of the elevators. Whichever one she takes is three times more likely to be going up than down. Why?

Remove two matchsticks to make the below equation correct.

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?

Find out which of the given views in the picture is accurately the top view of the given pyramid.

Eight of us go fourth, not back, to protect our king from an attack. What are we?

Three doctors said that Bill was their brother. Bill says he has no brothers. How many brothers does Bill actually have?

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.

That attorney is my brother, testified the accountant.

But the attorney testified he didn't have a brother.

Who is lying?

2, 3, 5, 9, 17, _ What is the next number in the sequence?