This is getting ridiculous. You’re perfectly correct. If there are three doors your chances of picking the right one are one in three. Knock one out of contention and the chances of either of the remaining doors being the right one are equal — one in two. This business about a million doors is a bit … Continue reading On “Let’s Make a Deal,” you pick Door #1. Monty opens Door #2 — no prize. Do you stay with Door #1 or switch to #3?