Toggle navigation
首页
模考
答疑
LUXU题
资料下载
课程
联系客服
注册
登录
BOOSTGRE题库
×
您还没有登录，登录以后才可以查看答疑和进行提问。
试题详情
For any positive integer n, the sum of the first n positive integers equals [n(n+1)]/2. What is the sum of all the even integers between 99 and 301? 15
A、10100.0
B、20200.0
C、22650.0
D、40200.0
E、45150.0
答案：B
专业教师答疑
最新
提问
0
评分
0
浏览
Problem Solving
老师这里偶数的和不应该是（100+300）*201 / 2 吗
问个问题
我想问：
提问
答疑小程序
最热提问
Quantitative Comparison
Quantity A90°Quantity BMeasure of angle Q......
Problem Solving
What is the greatest distance between two vertices......
Sentence Equivalence
Although the insistence on balancing spending agai......
Text Completion
A certain amount of theoretical frenzy about comic......
Text Completion
In the new biography, Gonzalez doesn’t (i)_____ ......
Text Completion
Political advertising may well be the most (i)____......
Reading Comprehension
The passage is primarily concerned with......
Reading Comprehension
It can be inferred from the passage that a histori......