Five persons namely, Bhaskar, Mary, Apala, Nemichand and Shahid are to be seated on five seats in a row such that Shahid and Bhaskar must sit next to each other and Mary and Apala must sit next to each other. How many distinct arrangements are possible?
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Combinatorics and counting has come up 24 times in 5 exams since 2009.
This question is on Permutations and combinations, part of Combinatorics and counting in Mathematics.
Counting arrangements and selections, with and without restrictions.
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Question from the UoH 2020 paper. Solutions are TestStop's own. Not affiliated with or endorsed by any examination authority.