Permutations And Combinations Question 1

Question: If eleven members of a committee sit at a round table so that the President and Secretary always sit together, then the number of arrangements is

Options:

A) $ 10\ !\ \times 2 $

B) $ 10! $

C) $ 9!\ \times 2 $

D) None of these

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Answer:

Correct Answer: B

Solution:

  • Required number of ways $ 9\ !\ \times 2 $ . {By fundamental property of circular permutation}.