Conditional probability: Difference between revisions

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== Example ==
Suppose that somebody secretly rolls two fair six-sided [[dice]], and we wish to compute the probability that the face-up value of the first one is 2, given the information that their sum is no greater than 5.
* Let ''D''<sub>1</sub> be the value rolled on [[dice|diedice]] 1.
* Let ''D''<sub>2</sub> be the value rolled on [[dice|diedice]] 2.
 
'''''Probability that'' ''D''<sub>1</sub>&nbsp;=&nbsp;2'''