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प्रश्न
17 cards numbered 1, 2, 3, 4, .... ,17 are put in a box and mixed thoroughly. A card is drawn at random from the box. Find the probability that the card drawn bears an odd number.
उत्तर
Total number of cards = 17
Let E1 be the event of choosing an odd number.
These numbers are 1, 3, 5, 7, 9, 11, 13, 15 and 17.
∴ P(getting an odd number) = P(E1) = `("Number of outcomes favourable to "E_1)/"Number of all possible outcome"`
Thus, the probability that the card drawn bears an odd number is `9/17`.
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