nick007 wrote:
A few days ago I watched an ep of MythBusters about this on Tru TV. I quickly checked YouTube & couldn't find it. Their study showed the best odds are when you change your door pick after one door gets removed. For example~ chose door 1, door 2 gets removed, your asked if you want to change your door, then you change your pick to door 3 for best likelihood of winning. I did NOT understand why the odds would not be 50/50 after one door is gone unless it's rigged & they chose or change the winning door after you 1st pick it. If it's not rigged, I would expect that you have the same odds if you change your door or not

Yes. I was thinking of that too. The "Monty Hall Problem" is quite a buzz among mathematicians. Its counterintuitive.
Old Monty Hall would make it two part. First you pick one of the three doors, and THEN Monty Hall takes away one of the doors you didnt pick leaving the one you picked, and one other. Asks you if you wanna change your mind to that other door, or keep the one you picked. For some reason its smart to change your mind, and to pick that other remaining door.