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in Probability by (65.2k points)

A bag contains 8 red and 4 green balls. Find the probability

(a) ball drawn is red when one ball is selected at random. 

(b) all the 4 balls are green when four balls are drawn at random. 

(c) Two balls are red and one ball is green when three balls are drawn at r 

(d) Three balls are drawn and none of them is green.

1 Answer

+1 vote
by (65.5k points)
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Best answer

n(s) = 8 + 4 = 12

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