in a bag, there are 18 balls in which xballs are red balls find the probability of getting non red balls
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We have red ball + non-red ball = 18
therefore x + (18-x)= 18
so, probability is 18-x/18
therefore x + (18-x)= 18
so, probability is 18-x/18
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Answered by
4
Total number of balls = 18
Number of red balls = x
Number of balls that are not red = 18 - x
Probability of getting non red ball = 18 - x/18
Number of red balls = x
Number of balls that are not red = 18 - x
Probability of getting non red ball = 18 - x/18
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