only one of which conceals the prize, and the game preseeds as follows. 1st, the contestant chooses a door. secondly, the host opens one of the other two doors, showing teh contestant that is not the prize door. 3rdly, the host invites the contestant to change her choice, if she wishes. analyse the game, and advise the contestant what to do.

i can provide hints if people want them i know its really difficult