The host of a game show offers the guest a choice of three doors. Behind one is an 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?

What has a ring but no finger?

By including only four matchsticks in below picture, you have to make "Four Triangles And Two Squares"

I am a type of word that is spelt incorrectly or used differently, on purpose for humour. What am I?
Hint 1: You can find me in a joke.
Hint 2: I am a play on words.

How many pluses should we put between the digits of 987654321 to get a total of 99, and where?

A new clothing store has a unique method of pricing items. A vest costs $20, a tie costs $15, a blouse costs $30, and underwear costs $45. How much would pants cost?

A man says, "Brothers and sisters, have I none, but that man's father is my father's son." Who is that man?

In the given figure, you can see that four match sticks are used to form a square. Can you form five squares by using six matches?

A 52% bias toss for head using the 51% tail bias coin was done to obtain a fair result.

Can you find how bias is the floor in this case?