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प्रथम छः धन पूर्णाकों में से दो संख्याएँ यदृच्छया ( बिना प्रतिस्थापन ) चुनी गई। मान लें x दोनों संख्याओं में से बड़ी संख्या को व्यक्त

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प्रथम छः धन पूर्णाकों में से दो संख्याएँ यदृच्छया ( बिना प्रतिस्थापन ) चुनी गई। मान लें x दोनों संख्याओं में से बड़ी संख्या को व्यक्त करता है। E(X) ज्ञात कीजिए।

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स्पष्ट है X का मान 2, 3, 4, 5, 6 हो सकता है। P(X = 2) = प्रायिकता जब दोनों संख्याओं में बड़ी संख्या 2 है। ⇒ P(X = 2) = P((1, 2) या (2, 1))

X 2 3 4 5 6
P(X) 2/30 4/30 6/30 8/30 10/30

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