第 3502026 期
7 + 7 + 6 = 20
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| A | 4 + 13 + 31 + 42 + 54 + 73 | = 217 → 7 |
|---|---|---|
| B | 7 + 21 + 36 + 43 + 55 + 75 | = 237 → 7 |
| C | 11 + 27 + 38 + 53 + 60 + 77 | = 266 → 6 |