| Description: | Memorise decimal digits. |
| Memorisation: | 15 minutes |
| Recall: | 30 minutes |
Rank | Competitor | Score | Championship |
| 2 | Fong Kam Kei | 160 digits | HKMC2021 |
| 7 | Siu Tsz Yin | 92 digits | HKMC2021 |
| 12 | LAM KING CHUNG ANDREW | 80 digits | HKMC2021 |
| 16 | Wang Kin Ming | 78 digits | HKMC2021 |
| 25 | Cai Sing Tung | 59.5 digits | HKMC2021 |
| 26 | Kam Chi Ho | 56 digits | HKMC2021 |
| 27 | Chan Chi Yuen | 53 digits | HKMC2022 |
| 29 | Shek Hiu Shun | 50 digits | HKMC2021 |
| 33 | Lai Tsz Yin | 45 digits | HKMC2021 |
| 35 | Chan Chi Ming | 40 digits | HKMC2021 |
| 35 | LAM CHUN YAM | 40 digits | HKMC2021 |
| 38 | WONG NGO YIN | 38 digits | HKMC2021 |
| 40 | Chan Chun Yin | 36 digits | HKMC2021 |
| 46 | Ng Chung Hin | 23 digits | HKMC2021 |
| 48 | Kwan Chun Heng Xisco | 20 digits | HKMC2021 |
| 48 | Lai Chun King | 20 digits | HKMC2021 |
| 54 | Yang Ki Lok | 19.5 digits | HKMC2021 |
| 55 | Shih Tsun Wang | 18 digits | HKMC2021 |
| 58 | WONG CHING NAM | 16 digits | HKMC2022 |
| 60 | Mau Kit Chi | 14 digits | HKMC2021 |
| 64 | Lai Ka Lok | 9 digits | HKMC2021 |
| 64 | Law TSZ Hei | 9 digits | HKMC2021 |
| 67 | Liu Siu Kei | 7.5 digits | HKMC2021 |
| 68 | Li Tsz Kiu | 6 digits | HKMC2021 |
| 70 | Luo Hei Tsun | 5 digits | HKMC2021 |
| 72 | WONG KI HOI | 4 digits | HKMC2021 |