🪞 Dual Mirror Lab

Opposites add to 0; reciprocals multiply to 1

Mission: Stop mixing up opposites and reciprocals!

🪞 Opposite Mirror: Opposite numbers add to 0.
🔄 Reciprocal Mirror: For nonzero numbers, reciprocals multiply to 1.
⚠️ Special case: The opposite of 0 is 0, but 0 has no reciprocal.

Predict first, then launch the validation animation. Normal mode starts at 100 points; each valid wrong answer costs 5 points and you retry the same question.
⏱️ 00:00
Predict the answer first

🏆 Dual Mirror Masters

Rank Name Best Score ⏱️ Time Best Date
11 黃???翔 100 00:53 2026-10-02 15:51
12 哈哈 100 00:54 2026-10-02 15:50
13 芝鹽 100 00:54 2026-10-03 10:24
14 10114 100 00:56 2026-10-02 15:43
15 87470123 100 01:02 2026-10-02 15:27
16 黃靖翔 100 01:08 2026-10-02 15:19
17 帥哥 100 01:22 2026-10-07 16:31
18 一隻貓 100 01:45 2026-10-02 16:17
19 ㄌㄜ 100 01:55 2026-10-02 16:16
20 腦蝕的後室 95 01:03 2026-10-14 09:05