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?

Six glasses are in a row. The first three are filled with milk and the last three are empty. By moving only one glass, can you arrange them so that the full and the empty glasses alternate?

When 99 is considered higher than 100?

You walk into a room that contains a match, a kerosene lamp, a candle and a fireplace. What would you light first?

The peacock is a bird that does not lay eggs. How do they get baby peacocks?

The captain of a ship was telling this interesting story: "We travelled the sea far and wide. At one time, two of my sailors were standing on opposite sides of the ship. One was looking west and the other one east. And at the same time, they could see each other clearly." How can that be possible?

A woman is sitting in her hotel room and hears a knock at the door. She opens the door to see a man whom she’s never met before. He says, “I’m sorry, I have made a mistake, I thought this was my room.” He then goes down the corridor and into the elevator. The woman goes back into her room and calls security. What made the woman so suspicious of the man?

15 caves are arranged in a circle at the temple of doom. One of these caves has the treasure of gems and wealth. Each day the treasure keepers can move the treasure to an adjacent cave or can keep it in the same cave. Every day two treasure seekers visit the place and have enough time to enter any two caves of their choice.

How do the treasure seekers ensure that they find the treasure in the minimum number of possible days?

Take one out and scratch my head, I am now black but once was red. What am I?

Place the numbers from 1 to 9 in the circles in a manner that each side of the triangle sums up to 17.