Question 41

Sonal and Meenal appear in an interview for same post having two vacancies. If $$\frac{1}{7}$$ is Sonal's probability of selection and $$\frac{1}{5}$$ is Meenal's probability of selection then what is the probability that only one of them is selected?

Solution

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Probability of Sonal's selection = $$\frac{1}{7}$$

Probability of Meenal's selection = $$\frac{1}{5}$$

The probability that only one of them is selected = $$\frac{1}{7}$$*$$\frac{4}{5}$$ +  $$\frac{6}{7}$$*$$\frac{1}{5}$$

= $$\frac{10}{35}$$

= $$\frac{2}{7}$$

B is the correct answer.

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