Q: Which of the following statements about basic counting and arrangements are correct?
(A) The number of ways to arrange n distinct objects in a row is n!;
(B) For circular arrangements of n distinct people around a round table, the number of distinct arrangements is (n − 1)!;
(C) If two particular persons must sit together in a row of n distinct people, they can initially be treated as a single combined unit for counting arrangements;
(D) In every arrangement problem, the order of objects does not matter;
(E) In some NET questions, additional constraints such as “A must not sit at the ends” further restrict the number of valid arrangements;
Choose the correct answer from the options given below:
Comment Your Answer
Please login to comment your answer.
Sign In
Sign Up
Answers commented by others
No answers commented yet. Be the first to comment!