★★★★★★★★★★★★★★★★★★★★★★★★★★★★★★ The condition
"Whether the host knows it or not, there is a sheep after opening the door" in the world. . To divide in two cases considered
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assume the host does not know, do the test experiments in 300
host 100 the second car, the host 200 sheep
while the 300 experiment where
you have to get the car 100 times, but you get this car to some 100 times (in the unlikely host 200 sheep in the car you have to choose the election was also the host car),
so the host 200 sheep, the 100 is your car, your sheep is 100 times
that is the same as the probability for no change, you do not change it, 100 vehicles, 100 sheep. .
In fact, although 300 experiments have been done, only these 200 are effective. . "The 100th event where the host opens the door is a car" does not exist in the world of "Whether the host knows it or not, there is a sheep after the door is opened", so only 200 times are valid. . And these 200 times are 100 each. Indeed for no change does not matter
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assume that a host knows that, after every time you choose to deliberately choose A group of sheep.
The test is done 300 times:
you choose the car 100 times, and you choose the sheep 200 times.
Your 200 sheep, the sheep a moderator to help you rule out another two choice, you do not change the 200 sheep
of your car 100 times, presenters help you rule out a sheep two additional choice, you do not change the 100 CRRC
So in this 300 experiments, if you don't switch, you will get 100
CRRC , and if you switch, you will get 200 CRRC ●●●●●●●●●●●●●●●●●●●●●●●●●●●
The host knows that you have a 2/3 chance of winning. . The host doesn't know that you have a 1/2 chance of winning. .
So you if you don't know the moderator knows or not. . Or switch to increase the probability. .
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