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9 November, 14:56

A multiple choice exam consists of 10 questions, each having 5 possible answers. To pass, you must answer at least 6 out of 10 questions correctly. What is the probability of You go into the exam without knowing a thing, and have to resort to pure guessing, you have studied enough so that on each question, 3 choices can be eliminated. But then you have to make a pure guess between the remaining 2 choices?

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  1. 9 November, 18:52
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    You have a 1:2 chance of guessing the right answer, if you have to guess between the two.
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