What is fit?

speaking of fitness, and treadmills, dont forget about
treadmillbike.jpg
 
Speaking of treadmills, I don't know if you all have seen this one or not, but it is hella funny:

 
The Monty Hall problem is simple, it's all about the fact that the announcer knows which door the car is behind. Think of it like this
Doors A, B, C all have equal chance of holding the car so
A+B+C=1
A+(B+C)=1 and we know A=1/3 since each door originally has a 1/3 chance of revealing the car
so 1/3+(B+C)=1 so (B+C)=2/3
Now here's where the confusion occurs, since the announcer knows which door has the car behind it, and he must know which of these two doors has a goat, and he reveals that door to you (lets say it's C). Now you know that C has a chance of 0 of holding the car so
(B+C)=2/3
B+0=2/3
B=2/3
There is a 2/3 chance that B holds the car. Take the switch.
 
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