Seating With Two Constraints

Problem

Five people $A, B, C, D, E$ stand in a row. $A$ is adjacent to neither $B$ nor $C$ , and $D$ is not adjacent to $E$ . How many arrangements are there?

Answer

Solution

Difficulty	6/10
Topics	combinatorics, Counting, Casework

Whiteboard

Your sketch is saved only in this browser. To share it, export your drawing as an image (whiteboard menu → Export as → PNG), then upload that image in the comments below.

Discussion

Ask questions, share alternate solutions, and use LaTeX freely.

0 comments

No comments yet.