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There are 20 balls in a bag which are numbered 1, 2, 3 . . . . . 20. Find the probability that the number marked on the ball taken out of the bag is divisible by 3 or 5.
Answer & Solution
Correct Answer:
Option
B
Number divisible by 3 = 6
Number divisible by 5 = 4
Number divisible by 3 or 5 = 1
Total number = 6 + 4 - 1 = 9
Probability = $$\frac{9}{{20}}$$
Number divisible by 5 = 4
Number divisible by 3 or 5 = 1
Total number = 6 + 4 - 1 = 9
Probability = $$\frac{9}{{20}}$$
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