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?

John left on a horse on Thursday , was gone for two days, and came back on Thursday after completing his work. How did that happen?

Your mother’s brother’s only brother-in-law is asleep on your couch. Who is asleep on your couch?

Do you know who was buried in John's tomb?

You are given four results as below:
1111 = F
2222 = E
3333 = T
Then, can you find out how to code 4444?

In the given picture, you can find two letters missing. When two particular letters are placed in the missing spots, you get an eight-letter word while reading in the anti-clockwise direction. Can you find out the missing letters and the missing word eventually?

When I get multiplied by any number, the sum of the figures in the product is always me. What am I?

Which word is least like the others? Third, fourth, fifth, sixth, seventh, eighth, ninth?

I am the fastest animal but cannot climb the tree. What am I?

A 52% bias toss for head using the 51% tail bias coin was done to obtain a fair result.

Can you find how bias is the floor in this case?