🪞 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
31 潘怡辰 90 02:05 2026-10-14 13:54
32 uihv 85 01:56 2026-10-02 15:24
33 零用錢 85 02:14 2026-10-14 09:05
34 8+9 85 02:44 2026-10-02 16:25
35 =ㄗㄨ 85 02:49 2026-10-02 16:13
36 施云勝17 85 03:20 2026-10-02 16:15
37 25 XD 80 01:10 2026-10-02 15:22
38 ...... 80 01:17 2026-10-02 16:16
39 帆 80 02:09 2026-10-02 16:08
40 吳宜珈 80 02:09 2026-10-02 16:19