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?

Make a sentence consisting of three words that have the whole alphabet.

Can you identify the direction in which this bus is moving; left or right?

Hint: The bus is moving on the roads of London.

The below mentioned letters have been placed in a order using a logic.

DEAD, BALL, FEAR, SHOP

Can you find the logic?

I have feet, but no legs. Which animal Am I?

I throw two dice simultaneously.

What is the probability of getting a sum as 9 of the two numbers shown?

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

If your uncle’s sister is not your aunt, what relation is she to you?

Astrology starts with the alphabet A, Biology starts with B, Psychology with P and Limnology with L.

Can you find an "ology" that begins with a P?

Imagine a box with two cogwheels, one big with 24 teeth and one small with 8 teeth. The big one is firmly attached to the center of the box which means it does not turn or move while the small one rotates around the big one.

How many times do you think that the smaller wheel will turn compared to the box when it turns once around the big one?