🌍 中文

🚀 Interstellar Railway: Arithmetic Sequence

Total Score: 0
⏱️ 00:00

Build Your Interstellar Route!

👉 Railway Guide:
🚅 【Interval Myth】: To calculate the mileage of the n-th station, the train only travels (n-1) intervals!
⬇️ 【Reverse Dive】: If the common difference d is negative, the value decreases.
🗺️ 【Mist Exploration】: Observe the total difference between two stations and divide it by the number of intervals to find the common difference d!

⚠️ Must "Submit Prediction" first! Correct: +20 points, Wrong: -5 points. Unlocks validation animation!
Level 1
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🏆 Railway Construction Leaderboard

🏆 By Highest Score 🕒 By Latest Challenge
Rank Name Highest Score ⏱️ Time Date
11 李奕葳 190 08:08 2026-04-17
12 吳孟琳 190 08:16 2026-04-16
13 陳宣齊 190 14:27 2026-04-16
14 Aaaaa 165 03:35 2026-04-29
15 帥哥良 165 05:26 2026-03-29
16 李沛芸 165 06:09 2026-04-14
17 吳季霖 140 17:18 2026-04-14
18 737 115 03:18 2026-04-08