practice: add questions on successive percentage changes
维护者通常 1 天内回复
还没有人认领这个 Issue。
评估
- 难度
- 1/5
- 预计耗时
- 1-3 小时
- 新手友好度
- 82/100
- Issue 类型
- 功能
- 描述清晰度
- 描述清楚
- 活跃度
- 活跃
- 技术栈
- json
- 领域
- content
调研方向
打开 shared/practice/questions.json,先阅读现有的定量问题,以匹配其结构。添加三个原创的连续百分比变化问题,每个问题包含四个选项、一个有效的答案 ID,以及展示计算过程的解释;保持现有 ID 不变。运行 npm ci 和 npm test 来检查题库。
由索引模型根据 Issue 内容生成。
描述
What to add
Add 3 original multiple-choice questions on successive percentage changes to the quantitative topic in shared/practice/questions.json.
The quantitative topic has 6 questions and none of them cover successive percentage changes yet. Some ideas (write your own wording and numbers):
- an increase followed by a decrease of the same percentage
- two discounts applied one after the other
- a value that grows by a fixed percentage for two years
Look at the existing quantitative questions in the file first and follow the same shape.
Requirements
- The questions must be your own. Do not copy from books, websites, coaching material, or past papers.
- Each question has exactly 4 options (
atod), oneanswerId, and anexplanationthat shows the reasoning or working, not only the answer. - Use
"topicId": "quantitative"and"difficulty": "easy"or"medium". A mix of both is welcome. - Give each question a new lowercase ID, for example
quant-successive-discount. Do not change existing IDs. - Indian context is welcome (Rs, km, common names).
Check your change
npm ci
npm test
npm test checks the question bank (unique IDs, four distinct options, a valid answer). If you have the .NET SDK, also run dotnet test backend/ProCoderJi.slnx --configuration Release. If you don't, CI runs the backend tests on your pull request.
Before you start
Leave a comment here when you start so others can pick a different issue. New to open source? Start with CONTRIBUTING.md. Questions are welcome in the comments.
- 主要语言
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环境准备
- 提供 Dockerfile 或 Docker Compose 文件
- 有 Pull Request 模板
- 阅读贡献指南
从这里开始
- 先读完整个 Issue,再读项目的贡献指南。
- 在 Issue 下留言说明你要接手 —— 这能避免两个人做同样的事。
- Fork 仓库,在一个分支上完成修改。
- 提交 Pull Request,并在描述里引用这个 Issue 编号。
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