In combinatorics, in how many distinct circular arrangements can 6 people be seated around a round dining table?

Answer and explanation

Correct answer: C.

  1. Step 1: Number of circular permutations of distinct items is . Step 2. For : . **Answer: . Why not the others:** is linear permutation ; is ; divides by 2.

Practise more Mathematics A: Functions, Calculus, Complex Numbers and Probability.

Free questions with an explanation for every one, and full timed Exames Nacionais Secundário (Portugal) mock tests.