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?

What do you answer even though it never asks you questions?

In front of you, there are 9 coins. They all look absolutely identical, but one of the coins is fake. However, you know that the fake coin is lighter than the rest, and in front of you is a balance scale. What is the least number of weightings you can use to find the counterfeit coin?

What does this rebus riddle mean?

what does the below math rebus puzzle mean?

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

I look at you, you look at me I raise my right, you raise your left. What am I?

The product of three consecutive numbers is 7980.
Then the sum of these consecutive numbers would be?

A beggar on the street can make one cigarette out of every 6 cigarette butts he finds. After one whole day of searching and checking public ashtrays the beggar finds a total of 72 cigarette butts. How many cigarettes can he make and smoke from the butts he found?

You throw me out when you want to use me and you take me in when you don't want to use me.

Who Am I?