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?

You have three orange, two pink and five purple balls in the drawer beside your bed. There is no electricity and the room is entirely dark. How many balls must you take out to ensure at least one ball of each colour at least?

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

What does this below rebus puzzle mean?

Can you make a fire with just a single stick?

One is to three as three is to five and five is to four and four is the magic number.
What is the pattern?

It's a 7-letter word.
If we remove 1 letter from it, it remains the same.
If we remove 2 letters from it, it remains the same.
If we remove 3 letters from it, it remains the same.
If we remove all the letters from it, still it remains the same.
What is it?

Can you find out the missing number?

? 4 5 3 5

9 5 7 10 3

Why is it very easy to weigh a fish?

When I go in I might cause pain. I cause you to spit and ask you not to swallow. I can fill your hole. What am I?