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?

Why do you find that most of the buildings are deprived of the 13th floor?

Do You See It?

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

Find the missing number in the sequence below:

A journalist was investigating a sacred cult in the jungles of Africa when he was caught by one of the person. He was confined in a cave till the leader arrived. The leader told him that he need to tell him a statement. If he thinks the statement is true, then the journalist head will be chopped off. If he thinks that the statement is false, his head will be smashed with a hammer.

What statement did the journalist make to survive?

John enters a small room. The Door Closes.
When the door opens, John is in a larger room.

Explain?

An exterior architect is asked by a builder to plant seven trees in a manner that there are exactly six rows of trees in a straight line and each row has three trees in particular.

How will he do it?

If you had a pizza with crust thickness 'a' and radius 'z', what's the volume of the pizza?

What is the fastest way to double your money?