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OpenStudy (anonymous):
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OpenStudy (anonymous):
OpenStudy (anonymous):
We need to find \(|A\setminus (B\cup C)|\). This becomes: \[ |A|-|B\cap A|-|C\cap A|+|B\cap C| \] Where \(|A|\) denotes the cardinality of set \(A\). Try to use that.
OpenStudy (anonymous):
Wait, change that last "\(B\cap C\)" into: \(A\cap B\cap C\)
OpenStudy (anonymous):
5
OpenStudy (anonymous):
Hmm... I get 4 for this. Could you show how you got 5?
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