(adsbygoogle = window.adsbygoogle || []).push({}); There are 4 boxes. One of them contains a lottery ticket....

There are 4 boxes. One of them contains a lottery ticket. Others have nothing. My probability that if i select and i win is 1/4 = 0.25. But before me someone selects a box, and i do not know if he has won or lost. What is the probability that if now i go to select i will win.

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# There are 4 boxes. One of them contains a lottery ticket

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