Abox contain 20 balls number of 1 to 20.A ball is drawn at random from the box . Find the probability that the number on the ball is. (1) divisible by 2or 3
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Probability that the number on the selected ball is not divisible by 10 =1820=910. Hence, option B is correct. Note- In this particular problem, out of numbers from 1 to 20 there are 10 odd numbers (i.e., 1,3,5,7,9,11,13,15,17,19) and 10 even numbers (i.e., 2,4,6,8,10,12,14,16,18,20).
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