To solve the problem of finding the number of distinct arrangements of 8 people around a circular table (where rotations are considered identical), we can use the principles of circular permutations:
Key Insight:
For linear permutations of (n) distinct objects, there are (n!) ways. However, in circular arrangements, rotating the table does not create a new arrangement. Each unique circular arrangement corresponds to (n) linear arrangements (one for each rotation). Thus, we divide the total linear arrangements by (n) to account for rotational symmetry.
Calculation:
-
For (n=8):
Number of distinct circular arrangements = (\frac{8!}{8} = 7!) -
Compute (7!):
(7! = 7×6×5×4×3×2×1 = 5040)
Answer: (\boxed{5040})
作者声明:本文包含人工智能生成内容。