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in Probability by (65.2k points)

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 

(i) red? 

(ii) not red ?

1 Answer

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by (65.5k points)
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Best answer

A bag contains 3 red balls, 5 black balls. 

Totally there are 8 balls. 

∴ n(S) = 8 

i) Possibility that the red ball drawn, n(E) = 3 

∴ Probability, P(E) = \(\frac{n(E)}{n(S)} = \frac{3}{8}\)

(ii) Possibility that the 1 black ball drwn is n(F) = 5 

∴ Probability, P(F) = \(\frac{n(F)}{n(S)} = \frac{5}{8}\)

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