🦊 Number Theory Vault Adventure

中文
Score: 0
⏱️ 00:00

Unlock the ancient seals behind the numbers!

👉 Exploration Guide:
🦊 Lv 1~4 [Kitsune Array]: Identify multiples of 9. Note! Don't just check if it ends in 9, you must "sum" all digits!
🧝‍♂️ Lv 5~8 [Elf Scale]: Identify multiples of 11. Sum "odd positions" and "even positions" separately, then subtract. A difference of 0 is also a multiple of 11!
🔐 Lv 9~12 [Vault Lock]: A digit is missing □. Deduce which digit (0~9) unlocks it.

⚠️ You must predict the answer to unlock animations! Correct: +20 pts. Wrong: -5 pts.
Level 1
Preparing...
0000
🤔 Predict: Is this a multiple?

🏆 Vault Leaderboard

🏆 By Highest Score 🕒 By Latest Attempt
Rank Name Highest Score ⏱️ Time Date
51 李沛芸 165 03:49 2026-04-01
52 Ray 140 01:53 2026-05-08
53 柯宇宸 140 02:26 2026-04-09
54 你死 140 03:44 2026-06-17
55 2/4 115 02:41 2026-04-14