A Microsoft Interview Question (aka basic Bayes' Theorem)

[TomCollins]

This is all it takes to get a job at MS? Wonder what went wrong.

Number the chambers 1-6. 1-2 are loaded. So if your friend shoots and its empty, you know that he had 3-6. Only chamber 6 has the chamber next to it loaded. So your chances are 1/4 of dying.

On the other hand, if you choose one randomly, your chances are 2/6 = 1/3, which is worse.

So you shoot without turning the chamber.