Skip to content / Đến nội dung
ThichHocToan.com

MathNet 2026 — Part 03 Question 7

Math Olympiad Vault · MathNet 2026 — Part 03

Question 7

Vivi, Tânia and Rosa are in a row, not necessarily in that order, and they shout successively, each, a multiple of $3$.

| 3 | 6 | 9 |
| :---: | :---: | :---: |
| 12 | 15 | 18 |
| $\vdots$ | $\vdots$ | $\vdots$ |

Vivi was the first to shout a number greater than $2003$ and Rosa the first to shout a four-digit number. Who shouted the number $666$? and the $888$?