Three people enter a room and have a green or blue hat placed on their heads. They cannot see their own hat but can see the other hats.
The colour of each hat is purely random. They could all be green, blue, or any combination of green and blue.
They need to guess their own hat colour by writing it on a piece of paper, or they can write 'pass'.
They cannot communicate with each other in any way once the game starts. But they can have a strategy meeting before the game.
If at least one of them guesses correctly they win $10,000 each, but if anyone guesses incorrectly they all get nothing.
What is the best strategy?

f you were running a race, and you passed the person in 2nd place, what place would you be in now?

Find the last number in the series below:

voN luJ yaM raM ---

You are given with the following sum. Each of the letters can be decoded as a digit. If we tell you that D = 5, then can you solve it entirely?

DONALD
+GERALD
=ROBERT

I possess a head

I flaunt a tail

But I don't have mouth or legs

Can you find out who I am?

What does below pictogram mean?

You walk into a room that contains a match, a kerosene lamp, a candle and a fireplace. What would you light first?

What is the fewest number of coins that would be required in order to make sure each and every coin touches exactly three other coins?

Which of the following words don't belong in the group and why?
CORSET, COSTER, SECTOR, ESCORT, COURTS

Today, I celebrated my 32nd birthday but I was born in 1972.
How is this possible?