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Two friends Jack and John appear in an interview for two vacancies in the same post. The probability of Jack's selection is (1/7) and the probability of John's selection is $(1 / 5)$. What is the probability that only one of them is selected?

i. $2 / 7$
ii. $1 / 7$
iii. $3 / 4$
iv. $4 / 5$
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The probability that only one of them is selected is (1/7 + 1/5 - 1/35) = 11/35.
by Bronze Status (7,913 points)
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