2025 AMC 10B Problem 16AMC 10 Step by Step
Name: Date: September 13, 2026
Arrangements with Restrictions · difficulty 3 of 5 · about 5 min · position P16-20
A circle has been divided into sectors of different sizes. Then of the sectors are painted red, painted green, and painted blue so that no two neighboring sectors are painted the same color. One such coloring is shown below.

How many different colorings are possible?
- A)
- B)
- C)
- D)
- E)