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प्रश्न
Cards marked with numbers 1, 2, 3 ......... 20 are well shuffled and a card is drawn at random. What is the probability that the number on the card is a perfect square?
उत्तर
Total possible outcomes = 20
Favorable outcomes for a perfect square = 1, 4, 9, 16
Number of favorable outcomes = 4
P(a perfect square) = `4/20 = 1/5`
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