Replace the question mark with the correct number below.

Whats the next number in the below number sequence pattern.

I have two coins.
* One of the coins is a faulty coin having a tail on both sides of it.
* The other coin is a perfect coin (heads on side and tail on other).

I blindfold myself and pick a coin and put the coin on the table. The face of the coin towards the sky is the tail.

What is the probability that another side is also tail?

There is a wide field of corn. A goose finds its way into the field and starts running. Can you find out till which point the goose can run into the field?

Mr Red Lives in the red house.
Mr Green Lives in the greenhouse.
Mr Yellow Lives in the yellow house.

Who lives in the Whitehouse?

Below the four parts have been reorganised. The four partitions are exactly the same in both arrangements. Why is there a hole?

John named his first son Alpha, second Beta, third Charlie and fourth Delta. What is the fifth son's name?

There was an aeroplane crash, every single person died, but two people survived. How is this possible?

What is the fewest number of coins that would be required in order to make sure each and every coin touches exactly three other coins?

What brings you down but never up?