A box contains 19 balls numbering from 1 to 19. A ball is drawn random from the box. Find the probability that the number on the ball is (1) divisible by 3 or 5 and (2) divisible by 3 and 5.
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A box contains 19 balls numbering from 1 to 19. A ball is drawn random from the box. Find the probability that the number on the ball is (1) divisible by 3 or 5 and (2) divisible by 3 and 5.
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