第 3505548 期
6 + 8 + 7 = 21
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| A | 5 + 10 + 19 + 28 + 53 + 71 | = 186 → 6 |
|---|---|---|
| B | 7 + 13 + 26 + 41 + 58 + 73 | = 218 → 8 |
| C | 9 + 15 + 27 + 45 + 62 + 79 | = 237 → 7 |