Statistics And Probability Question 325
Question: If the probability that a student is not a swimmer is 1/5, then the probability that out of 5 students one is swimmer is
Options:
A) $ ^{5}C_1{{( \frac{4}{5} )}^{4}}( \frac{1}{5} ) $
B) $ ^{5}C_1,\frac{4}{5},{{( \frac{1}{5} )}^{4}} $
C) $ \frac{4}{5}{{( \frac{1}{5} )}^{4}} $
D) None of these
Show Answer
Answer:
Correct Answer: B
Solution:
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Required probability = $ {}^{5}C_1( \frac{4}{5} ){{( \frac{1}{5} )}^{4}} $ {Here strictly one is swimmer}
BETA
