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प्रश्न
In a lottery there are 10 prizes and 25 blanks. What is the probability of getting a prize?
टीपा लिहा
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उत्तर
Total number of lottery tickets = 10 + 25 = 35
Number of prizes = 10
Let E be the event of getting a prize.
∴ P(getting a prize) = P(E) = `"Number of outcomes favourable to E"/"Number of all possible outcome"= 10/35 = 2/7`
Thus, the probability of getting a prize is `2/7`
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