Logical reasoning problem Only one of a, B, C and D got excellent in a certain technical examination. Only one of the following four judgments about their examination results is true. Ask: who is the outstanding one? Which judgment is true? Write down the reasoning process 1) If a does well, then B does well The one with excellent results is C A is the best, not b 4. The one with excellent results is a or D

Logical reasoning problem Only one of a, B, C and D got excellent in a certain technical examination. Only one of the following four judgments about their examination results is true. Ask: who is the outstanding one? Which judgment is true? Write down the reasoning process 1) If a does well, then B does well The one with excellent results is C A is the best, not b 4. The one with excellent results is a or D

Because only one is true, if 1 is true, it goes against the idea that there is only one excellence, so 1 is false;
If 3 is true, then 4 is false, that is, the outstanding one is neither a nor D. contrary to each other;
If 4 is true, it is contrary to 3;
Therefore, the outstanding achievement is C