sandeep77 sandeep77

19-05-2017
Mathematics

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Ques. A biased die has a probability of 1/4 of showing a 5, while the probability of any of 1, 2, 3, 4, or 6 turning up is the same . If three such dice are rolled, what is the probability of getting a sum of atleast 14 without getting a 6 on any die ?

Respuesta :

19-05-2017

Here's a hint, the only way to get 14 is 5-5-4 so just do your probability calculation with that

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