a box contains 20 balls numbered from 1 to 20 .A ball is drawn random from the box . Find the probability that the ball drawn is a) divisible by 3or 5 b) neither divisible by 5 or 10 c ) an even number
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What is the probability that the number on the drawn ball is. i. an odd number ii. divisible for 2 or 3 iii. prime number iv. not ...
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