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A box contains 19 balls bearing number 1...

A box contains 19 balls bearing number 1,2,3,……..19 respectively. A ball is drawn at random from the box. Find the probability that the number on the ball is (i) a prime number, (ii) an even number (iii) a number divisible by 3.

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The correct Answer is:
`8/19,9/19,6/19`
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