A man and his wife appear in an interview. The probability of husband‘s selection is \(\frac{1}{3}\)and the probability of wife‘s selection is \(\frac{2}{5}\) .What is the probability that only one of them is selected? |
\(\frac{8}{15}\) \(\frac{7}{15}\) \(\frac{2}{5}\) \(\frac{1}{3}\) |
\(\frac{7}{15}\) |
Probability of man‘s selection is = \(\frac{1}{3}\) Probability of wife ‘s selection is = \(\frac{2}{5}\) Probability that any one of them is selected = probability of man‘s selection and not wife selection or probability of wife‘s selection not man Then probability = \(\frac{1}{3}\) × ( 1- \(\frac{2}{5}\) ) + \(\frac{2}{5}\) × ( 1- \(\frac{1}{3}\) ) = \(\frac{7}{15}\) |