What are the chances of countdown interview for graduate students' written test?

The bigger one. The success rate of the last person in the initial test is also quite high, because no matter what he takes, his final right is to put the scores of the initial test and the retest together, and then arrange them from high to low. If he knows that the initial test is not dominant, then he should prepare for the second test and strive to be particularly brilliant in the second test.