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दो पासे उछाले जाते हैं पहले पासे पर विषम अंक और दूसरे पासे पर 3 का गुणज प्राप्त करने की प्रायिकता ज्ञात कीजिए।

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प्रतिदर्श समष्टि `S ={1, 2, 3, 4, 5, 6}`
`:. n(S)=6`
माना A = पहली पासे पर विषम अंक प्राप्त करने की घटना
`implies A={1, 3, 5}`
B = दूसरे पासे पर 3 का गुणज प्राप्त करने की घटना
`implies B={3, 6}`
यहाँ `n(A)=3, n(B)=2`
`:. P(A)=3/6=1/2` और `P(B)=2/6=1/3`
अतः अभीष्ट प्रायिकता `=P(A nn B)`
`=P(A). P(B),` [A और B स्वतंत्र घटनाऍं हैं]
`=1/2 xx1/3=1/6`.

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