Mathematics
Two players, Sania and Sonali, play a tennis match. It is known that the probability of Sania winning the match is 0.69. What is the probability of Sonali winning?
Probability
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Answer
Let P(E) be the probability of Sania's winning and P(E') be the probability of Sania losing or the probability of Sonali winning.
∴ P(E) + P(E') = 1
⇒ 0.69 + P(E') = 1
⇒ P(E') = 1 - 0.69
⇒ P(E') = 0.31
Hence, the probability of Sonali winning is 0.31
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