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Lying gambler (Posted on 2010-10-21) Difficulty: 1 of 5
A gambler throws a die and tells the score. He tells truth 3/4 of the times that he speaks and randomly lies 1/4 of the times that he speaks. If he says it is a six, what is the probability that he actually got a six?

No Solution Yet Submitted by Vishal Gupta    
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Solution Solution | Comment 5 of 6 |
The probability is 75% that he is telling the truth, thus there is a 75% probability that it is a 6 . . .

. . . unless  it happens to be a 4-sided die, in which case there is a 100% probability that it is not a 6.

  Posted by hoodat on 2010-10-25 15:31:32
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