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प्रश्न
A bag contains 100 identical marble stones which are numbered 1 to 100. If one stone is drawn at random from the bag, find the probability that it bears a number divisible by 5.
योग
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उत्तर
Total number of possible outcomes = 100
Numbers which are divisible by 5 = 5, 10, 15, 20, 25, 30, 35, 40, 45, 50, 55, 60, 65, 70, 75, 80, 85, 90, 95, 100
Number of favorable outcomes = 20
P(number divisible by 5) = `20/100 = 1/5`
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