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?

It belongs to you, but other people use it more than you do. What is it?

What seven-letter word has hundreds of letters in it?

A chicken farmer has figured out that a hen and a half can lay an egg and a half in a day and a half. How many hens does the farmer need to produce one dozen eggs in six days?

There was a strange boy who was born before his father. How can this be possible?

If you toss a coin 10 times and it lands heads up every time, what are the chances it will land heads up if you toss it again?

I am weightless, but you can see me. Put me in a bucket, and I'll make it lighter. What am I?

When 99 is considered higher than 100?

Can you count the number of matches in the picture below ?

In a rainy season, one day 3 huge ladies walked under a normal-sized umbrella.
The umbrella is not huge enough to accommodate all 3 ladies yet not a single lady got wet. Why?