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?

You have 10 balls with you. A friend of yours out of nowhere asks you to place those ten balls in five lines such that each of the lines has exactly 4 balls on them. He needs to check your intelligence. Prove him by doing the task.

Quickly Solve this riddle

7 - 4 + 3 * 0 + 1 = ?

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

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

The doctor advised his patient to take a tablet after every fifteen minutes. He gave him five tablets in total.

How much time will he take to have all the five tablets?

Which three-digit number, made of consecutive digits, like 567, is 2 less than a cube and 2 more than a square?

In the given figure, move three matchsticks so that the resulting figure contains two rectangles.

Alex opened 24 presents
Jonah opened 8 presents
Clara opened 1 present

Can you find out how many presents were opened by Candy?

If we add four times the age of John four years from now to five times his age five years from now we get ten times his current age.

How old will John be two years from now?