AMC 8 2001 Problem 22
AMC8 2001 年第 22 题
特殊数与不定方程★★★★☆
On a twenty-question test, each correct answer is worth 5 points, each unanswered question is worth 1 point and each incorrect answer is worth 0 points. Which of the following scores is NOT possible?
在一项有 20 个问题的测试中，每个正确答案得 5 分，每个未回答的问题得 1 分，每个错误答案得 0 分。则以下哪个得分是不可能的？ Problem 23 Points, and are vertices of an equilateral triangle, and points, and are midpoints of its sides. How many noncongruent triangles can be drawn using any three of these six points as vertices? 点 R，S 和 T 是一个等边三角形的三个顶点，点 X，Y 和 Z 分别是边的中点。使用这六个点中的任意三个作为顶点，可以画出多少个不全等的三角形？
- A.90
- B.91
- C.92
- D.95
- E.97
正确答案 · Correct Answer
E
解析 · Solution
解析整理中
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