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?

Make eight squares by moving only two matchsticks.
Note- Square can be of different sizes.

I’m light as a feather, yet the strongest person can’t hold me for five minutes. What am I?

You see me once in June, twice in November, and not at all in May. What am I?

This is a classy optical illusion puzzle. What more you can find except bricks in the image below?

Name one eight-letter word with 'kst' in the middle, 'in' the beginning, 'and' at the end.?

Whats the next number in the below number sequence pattern.

An inspection by the superintendent of St. Joseph School was scheduled on the next day. The class teacher Jenifer knew that he would be asking questions from her class and she would have to choose a pupil to answer. To offer a perfect impression over him, the teacher explained certain instructions to the students to maximise the chances of getting correct answer every time.

What did she say to the students?

A man calls his dog from the opposite side of a river. The dog crosses the river without a bridge or a boat and manages to not get wet. How is this possible?

The square root of number 121 is "11". What is the square root of the number "12345678987654321."?