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An urn contains 10 red and 8 white balls. One ball is drawn at random. Find the probability that the ball drawn is white.

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Total no of possible outcomes = 18 {10 red balls, 8 white balls}

E ⟶ event of drawing white ball

No. of favourable outcomes = 8 {8 white balls}

Probability, P(E) = (No.of favorable outcomes)/(Total no.of possible outcomes)

= 8/18 = 4/9

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