If P(A)=0.4 and P(B)=0.5 are mutually exclusive, what is P(A∪B)?
यदि P(A)=0.4 और P(B)=0.5 mutually exclusive हैं तो P(A∪B) क्या है?
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Correct Answer
B. 0.9
ExplanationStep 1: Identify addition theorem. Step 2: For mutually exclusive events union probability is sum 0.4+0.5=0.9. so the correct option follows. Step 3: In exam questions apply the formula first.
Step 1: addition theorem पहचानें। Step 2: mutually exclusive में union probability sum 0.4+0.5=0.9 है। इसलिए सही विकल्प मिलता है। Step 3: ऐसे प्रश्नों में पहले सूत्र लगाएँ।