10. A 2×3 rectangular flower bed is divided into six 1×1 square regions: A,B,C,D,E,F. Each region is planted with one type of plant, and adjacent regions must have different plants. Given 6 types of plants to choose from, there are different planting schemes.
A number or a short expression. Spacing and $ signs are ignored.
Official solution
10.13230
Source: NuminaMath-1.5,
licensed Apache-2.0.
Statement and solution reproduced as published; topic, difficulty and ordering added
by this site.