Yet Another Math One

[nintendo_fanboy]

jlauro said:

nintendo_fanboy said:

read my post, Samuel. The box where you are not standing unites the third chance of itself and the third chance of the revealed box.

and jlauro, you haven't read the rules right I think...

Here are the all rules that were given:

The host now tells you if you pick the right box, you win the grand prize. If you pick one of the other two... you go home empty handed.

 

This is the basic rule, but if you read on in the original post, you will see that after you have made your choice, the host reveals one box and then he gives you the chance to change. Clear?

As for your other post, the chance for situation 1a and 1b is 1/6 each, which makes it 1/3 together and therefore equal to the other two situations. You decide which situation you get, you either go on A, B or C. It's one third that you go on A, and then it's fifty-fifty if the moderator reveals B or C.