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?

There are nine letters in the below-given diagram. You have to form a nine-letter word using these letters.

13 decks of cards have been mixed. What is the minimum number of cards that must be taken out from the above-mixed cards to guarantee at least one 'four of a kind?

Prove that twice of ten is the same as twice of eleven.

Find the missing number in the image below.

Why 1729 is a magic number? Answer Logically.

What word begins and ends with an E, but has only one letter?

A seven-year-old kid challenged his classmates that he can make the number one disappear by adding something to it.

How can he do that?

What can you hold in your right hand, but never in your left hand?

A man dies of old age on his 25 birthday. How is this possible?