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BGonline.org Forums
Thanks!
Posted By: Bob Koca In Response To: Thanks! (Casper van der Tak)
Date: Monday, 11 October 2010, at 4:21 p.m.
Here is where I think your intuition is failing:
If A and B are disjoint then P(A or B) = P(A + B). This can be generalized to any finite collection of disjoint sets. It does NOT generalize though to infinite collections of disjoint sets.
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