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Given \(P(A) = 0.43, P(B) = 0.72,\) and \(P(A \cap B) = 0.29\text{,}\) determine
  1. \(\displaystyle P(A \cup B)\)
  2. \(\displaystyle P(B | A)\)
  3. \(\displaystyle P(A | B)\)
  4. \(\displaystyle P(A^c \cap B^c)\)
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