Two out of ten tickets on sale for a raffle draw are winning tickets. If...
FURTHER MATHEMATICS
WAEC 2013
Two out of ten tickets on sale for a raffle draw are winning tickets. If a guest bought two tickets, what is the probability that both tickets are winning tickets?
- A. \(\frac{1}{80}\)
- B. \(\frac{1}{45}\)
- C. \(\frac{1}{20}\)
- D. \(\frac{1}{10}\)
Correct Answer: B. \(\frac{1}{45}\)
Explanation
P(winning) = \(\frac{2}{10}\)
P(both tickets winning) = \(\frac{2}{10} \times \frac{1}{9} = \frac{1}{45}\)
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