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The probabilities that Kodjo and Adoga pass an examination are \(\frac{3}{4}\) and ...
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The probabilities that Kodjo and Adoga pass an examination are \(\frac{3}{4}\) and \(\frac{3}{5}\) respectively. Find the probability of both boys failing the examination
A.
\(\frac{1}{10}\)
B.
\(\frac{3}{10}\)
C.
\(\frac{9}{20}\)
D.
\(\frac{2}{3}\)
Show Answer
Show Explanation
Correct Answer: A
Explanation
P(Kodjo passing) = \(\frac{3}{4}\); P(Adoga passing) = \(\frac{3}{5}\)
P(Kodjo failing) = \(\frac{1}{4}\); P(Adoga failing) = \(\frac{2}{5}\)
P(both fail) = \(\frac{1}{4} \times \frac{2}{5}\)
= \(\frac{1}{10}\)
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