The host of a game show, offers the guest a choice of three doors. Behind one is a expensive car, but behind the other two are goats.
After you have chosen one door, he reveals one of the other two doors behind which is a goat (he wouldn't reveal a car).

Now he gives you the chance to switch to the other unrevealed door or stay at your initial choice. You will then get what is behind that door.

You cannot hear the goats from behind the doors, or in any way know which door has the prize.

Should you stay, or switch, or doesn't it matter?

The more of this there is, the less you see. What is it?

Find The Next Number in this series.
1, 2, 6, 42, 1806 ?

I have a head like a cat and feet like a cat, but I am not a cat. What am I?

John said, "If yesterday was tomorrow, today would be Friday."

When did John make this statement?

You have four chains. Each chain has three links in it. Although it is difficult to cut the links, you wish to make a single loop with all 12 links. What is the fewest number of cuts you must make to accomplish this task?

Can you move 2 matchsticks to form four equal sized squares.

Which English verb becomes past tense just by rearranging the letters?

My location can be determined by the below rebus.
So where am i ?

Here is a conversation between a couple who both are software professionals.

Husband: Hey! What is your date of birth?
Wife Replied Angrily: It is 591062400
Husband after doing some calculations replied, "Got It".

What is the DOB of the wife?