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प्रश्न
A bag contains cards which are numbered from 2 to 90. A card is drawn at random from the bag. Find the probability that it bears a number which is a perfect square
बेरीज
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उत्तर
Total no. of possible outcomes = 89 {2, 3, 4, …., 90}
E ⟶ event of getting a no. which is perfect square
No. favourable outcomes = 8 {4, 9, 16, 25, 36, 49, 64, 81}
P(E) =`"No.of favorable outcomes"/"Total no.of possible outcomes"`
P(E) =8/89
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