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Seven persons are to be seated in a row. The probability that two particular persons sit next to each other is

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Seven persons are to be seated in a row. The probability that two particular persons sit next to each other is A. 1/3 B. 1/6 C. 2/7 D. 1/2 Select the correct answer from above options

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Given that 7 persons are to be seated in a row. If two persons sit next to each other, then consider these two persons as 1 group. Now we have to arrange 6 persons. ∴ Number of arrangement = 2! × 6! Total number of arrangement of 7 persons = 7! Hence, the correct option is (C).

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