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22 Oct 2021, 06:15
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E
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Difficulty:
15%
(low)
Question Stats:
84% (02:02) correct
16%
(02:54)
wrong
based on 258
sessions
History
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Result
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In a certain contest, each contestant has a 1/25 probability of winning the grand prize and a 1/10 probability of winning a consolation prize. What is the probability that a given contestant does not win either the grand prize or a consolation prize?
A. 1/5
B. 27/40
C. 25/32
D. 3/4
E. 43/50
A. 1/5
B. 27/40
C. 25/32
D. 3/4
E. 43/50
23 Oct 2021, 00:51
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It is a mutually exclusive case:
Neither G nor C = 1 - P(Either A or B)
Neither G nor C = \(1 - (\frac{1}{25} + \frac{1}{10})\)
Neither G nor C = \(1 - (\frac{7}{50}) = \frac{43}{50}\)
Answer E
Neither G nor C = 1 - P(Either A or B)
Neither G nor C = \(1 - (\frac{1}{25} + \frac{1}{10})\)
Neither G nor C = \(1 - (\frac{7}{50}) = \frac{43}{50}\)
Answer E
23 Jul 2025, 02:26
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