Random Variables · Expected Value

Lesson 13

Nikolai Chukhin · Alexander S. Kulikov

A stranger in a bar offers you to play the following game. Each of you puts one euro on the table and writes “heads” or “tails” on a piece of paper. Then a coin is flipped, and the two euros on the table are divided among those who guessed correctly. If no one guessed correctly, each player simply takes back their euro.

Problem. Will you agree to play this game?

5 points

  1. Everything is fair here, why not play?

  2. Something is wrong here; it is not worth playing!