The probability that kebba, Ebou and Omar will hit a target are \(\frac{2}{3}\), \(\frac{3}{4}\) and...
MATHEMATICS
WAEC 2015
The probability that kebba, Ebou and Omar will hit a target are \(\frac{2}{3}\), \(\frac{3}{4}\) and \(\frac{4}{5}\) respectively. Find the probability that only Kebba will hit the target.
- A. \(\frac{2}{5}\)
- B. \(\frac{7}{60}\)
- C. \(\frac{1}{30}\)
- D. \(\frac{1}{60}\)
Correct Answer: C. \(\frac{1}{30}\)
Explanation
Hence the probability that only Kebba will hit the target
= P(K)xP(E')xP(O')
= \(\frac{2}{3} \times \frac{1}{4} \times \frac{1}{5}\)
= \(\frac{1}{30}\)
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