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?
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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