What is the next number in the series?

15 29 56 108 208 ?

Can you solve this amazing hard number series problem?
7, 8, 10, 12, 16, 18 ?

If all Goats are Sheep and all Sheep are Deers, are all Deers Goats ?

What can run but never walk, have a mouth that never speaks, have a head that never weeps, and have a bed but never sleeps?

A woman lives in a Tall building thirty-six floors high and 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?

In a mathematical quiz, you are asked the following question:

Use three 9s in a mathematical expression without dividing or multiplying to form the number one.

Can you answer the question?

In a jungle where there are no street lights or any other artificial source of lights, I notice a black snake crossing the road.
How did I get sight of the snake?

Do you know of a place where the wind blows south and then suddenly shifts direction towards the north?

You have a 12 liters jug full of water. You have two empty 8 liters and 5 liters jug. How can you divide the water into two equal parts using these jugs?

What does Alexander the Great and Winnie the Pooh have in common?