AMC 8 1987 Problem 3
AMC8 1987 年第 3 题
数列与规律★★☆☆☆
题干整理中
- A.1600
- B.1650
- C.1700
- D.1750
- E.1800
正确答案 · Correct Answer
E
解析 · Solution
Solution 1
Rearranging terms yields .
Recall that the sum of an arithmetic series , so this sum is .
继续练习
AMC8 1987 年第 3 题
题干整理中
正确答案 · Correct Answer
E
Solution 1
继续练习