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MAVERICK [17]
3 years ago
15

If the odds against Deborahs winning first prize in a chess tournament are 1 to 11 what is the probability of the event that she

will win first prize
Mathematics
1 answer:
Lemur [1.5K]3 years ago
7 0

Answer: \dfrac{11}{12}

Step-by-step explanation:

Given

The odds against winning in a chess tournament are 1 to 11.

Odds is defined as the ratio of the probability of occurrence to the non-occurrence of event.

\therefore \text{Probability that event will occur is P'=}\dfrac{1}{1+11}\\\\\Rightarrow P'=\dfrac{1}{12}

Probability of non-occurrence i.e. she wins the first prize is

\Rightarrow P=1-\dfrac{1}{12}\\\\\Rightarrow P=\dfrac{11}{12}

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