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Grade: 12th pass
        
Consider an urn in which 4 balls have been placed by the following scheme : A fair coin
is tossed; if the coin falls head, a white ball is placed in the urn, and if the coin falls tail, a red
ball is placed in urn. (
i)What is the probability that the urn will contain exactly3 white balls ?
 
2 years ago

Answers : (1)

Athul
20 Points
							Probability of No of white balls being 3 is same as probability of getting 3 heads ......To find the p (3 heads): n(3H)/n(S). = 4/16=1/4.....      And:1/4
						
2 years ago
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