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- Jan 26, 2012

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**-P[A \cap B]$ and for three events $P[A \cup B \cup C] = P[A] + P**

**+ P[C] - P[A \cap B] - P[A \cap C] - P[B \cap C] + P[A \cap B \cap C]$.**

Using these as a guideline what is $P[A \cup B \cup C \cup D]$? In general, how many terms will be in \(\displaystyle P\left[ \bigcup_{i=1}^{n} A_i \right]\)?

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Remember to read the POTW submission guidelines to find out how to submit your answers!Using these as a guideline what is $P[A \cup B \cup C \cup D]$? In general, how many terms will be in \(\displaystyle P\left[ \bigcup_{i=1}^{n} A_i \right]\)?

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Remember to read the POTW submission guidelines to find out how to submit your answers!