(March 13, 2016 at 8:49 am)Mr.wizard Wrote: The probability does not change, if you use a pick and hold strategy you will win 1/3 of the time, if you use a pick and switch strategy you will win 2/3 of the time, it's that simple, no it does not guarantee you a car but it is in your best interest to switch mathematically.
I repeat myself, that would only be true if you knew for sure that no matter how many times the game is played, the number of times each door is picked will be the same, for instance 999999 times each.