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8.(ii)   A bag contains 3 red balls and 5 black balls. A ball is drawn at random from the bag. What is the probability that the ball drawn is not red?

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Total number of balls in the bag = 8
No. of red balls = 3
No. of black balls = 5

(ii) We know,
P(not\ E) = P (\overline E) = 1 - P (E)
where E\ and\ \overline E are complementary events.

\therefore Probability of not getting the red ball
= 1 - Probability\ of\ getting\ a\ red\ ball
\\ = 1 - \frac{3}{8} \\ = \frac{5}{8}

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HARSH KANKARIA

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