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प्रश्न
A bag contains cards numbered from 1 to 49. A card is drawn from the bag at random, after mixing the cards thoroughly. Find the probability that the number on the drawn card is a perfect square.
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उत्तर
Total number of cards = 49
Total number of outcomes = 49
The numbers 1, 4, 9, 16, 25, 36 and 49 are perfect squares.
Total number of favourable outcomes = 7
∴ Required probability `="Total number of favourable outcomes"/"Total number of outcomes"=7/49`
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