Math problem 19 is a probability and statistics problem, which is a bit difficult and involves unfamiliar knowledge points.

The math problems in the national examination paper are not as difficult as expected. Almost as difficult as the usual training questions. I feel very good ... most candidates report that there are no strange questions and partial questions in mathematics, and the difficulty is not much different from usual training.

"Science mathematics volume finale problem 2 1, this is a derivative problem, this problem is not difficult. For many candidates, the difficulty is easier than expected. "

In science mathematics test papers, the difficulty of multiple-choice questions and fill-in-the-blank questions is simpler than usual, but some application questions have a large amount of calculation. "Some candidates said that they had not finished the examination paper."