How many points are there on the globe where, by walking one mile south, then one mile east and then one mile north, you would reach the place where you started?

Irene killed hundreds of people mercilessly and yet the police were not able to put her behind the bars. Why?

People are waiting in line to board a 100-seat aeroplane. Steve is the first person in the line. He gets on the plane but suddenly can't remember what his seat number is, so he picks a seat at random. After that, each person who gets on the plane sits in their assigned seat if it's available, otherwise, they will choose an open seat at random to sit in. The flight is full and you are last in line. What is the probability that you get to sit in your assigned seat?

You find yourself in a strange place guarded by two guards.One of the guard always say truth while other always lies.You don't know the identity of the two.You can ask only one question to go out from there. What should you ask?

Which letter of the alphabet has the most water?

A prisoner is told: "If you tell a lie, we will hang you and if you tell the truth, we will shoot you." What did the prisoner say to save himself?

Which word is least like the others? Third, fourth, fifth, sixth, seventh, eighth, ninth?

People put me on the table and cut me but do not eat me. What am I?

Find the 8 in the below-given Image.

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.