第 3501550 期
7 + 5 + 9 = 21
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| A | 4 + 13 + 21 + 37 + 49 + 63 | = 187 → 7 |
|---|---|---|
| B | 8 + 15 + 25 + 46 + 55 + 66 | = 215 → 5 |
| C | 9 + 18 + 35 + 47 + 56 + 74 | = 239 → 9 |