AMC 8 2025 Problem 15
AMC8 2025 年第 15 题
基本计数原理★★★☆☆
Kei draws a 6 -by- 6 grid. He colors 13 of the unit squares silver and the remaining squares gold. Kei then folds the grid in half vertically, forming pairs of overlapping unit squares. Let and equal the least and greatest possible number of gold-on-gold pairs, respectively. What is the value of m+M?
画了一个6×6的网格，并将其中13个单元格涂成银色，其余单元格涂成金色。然后，Kei将网格垂直对折，形成若干对重叠的单元格。设m和M分别为两个金色单元格重叠对数的最小和最大可能值。请问m + M的值是多少？
- A.12
- B.14
- C.16
- D.18
- E.20
正确答案 · Correct Answer
C
解析 · Solution
解析整理中
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