JEE MATHEMATICS MCQ: PERMUTATIONS

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On a railway route there are 15 stations. The number of tickets required in order that it may be possible to book a passenger from every station to every other is

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Correct option: B

210

Option B (210) is correct because it calculates the number of permutations of choosing 2 stations out of 15, which represents the number of tickets needed from every station to every other station.

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