Let A and B be independent events. If P(A) = 0·3, P(B) = 0·4, what is P(A ∪ B)?माना A तथा B स्वतंत्र घटनाएँ हैं। यदि P(A) = 0·3, P(B) = 0·4 हो, तो P(A ∪ B) का मान है
माना A तथा B स्वतंत्र घटनाएँ हैं। यदि P(A) = 0·3, P(B) = 0·4 हो, तो P(A ∪ B) का मान है
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Correct answer: (B) 0·580·58
Explanation
P(A ∩ B) = 0.3 × 0.4 = 0.12, so P(A ∪ B) = 0.3 + 0.4 − 0.12 = 0.58.P(A ∩ B) = 0.3 × 0.4 = 0.12, इसलिए P(A ∪ B) = 0.3 + 0.4 − 0.12 = 0.58।