IMAS 2021 — Middle Primary Grades 3–4 — Round 1 Question 19

Four persons A, B, C and D will participate in a 100-meter race. The following table shows the predicted rankings of each of these four participants before the race. Line ① is participant B's prediction. After the race, all four of them checked the final ranking and after comparing it with their predictions, they found out that nobody predicted their own personal ranking correctly. It is known that everyone has correctly predicted the winner of at least one from the first to third placers, none of them correctly predicted who finished last and exactly two participants correctly predicted the third place winner. Who are the participants that predicted line ②, line ③ and line ④? Note: write the answer in this order.

| | First Place | Second Place | Third Place | Four Place |
| --- | --- | --- | --- | --- |
| ① | D | B | C | A |
| ② | D | A | B | C |
| ③ | A | B | C | D |
| ④ | C | A | B | D |