A bag contains 18 balls.out of which x are red. (i) If one ball is dra – InterviewSolution

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1.	A bag contains 18 balls.out of which x are red. (i) If one ball is drawn at random from the bag, the what is the probability that it is a red ball ? (ii) If 2 more red balls are put in the bag, then probability of drawing a red ball will be 9/8 times that of red ball coming in part (i), find value of x.
Answer» Probability ball is red=>`x/18` new probability of red ball=`(x+2)/20=9/8xxx/18=x/16` `x=8balls`

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