1, the first question and the last question, the answer is generally not option A, the first multiple-choice question in mathematics is generally the simplest, and there are many confusing items in the options. Generally, the first option will not be the correct answer, basically in the middle, the last question is the most difficult, and most of the answers will not be the first one, so the later options will be more likely.

2, multiple-choice answers, ABCD is generally evenly distributed. Generally, in the college entrance examination paper, there are 12 math multiple-choice questions and ABCD four options, which are basically equally divided. No more than half of an option in 12 multiple-choice questions. This is basically not going to happen. The four options basically account for 25% each. You can get the answer according to this law, so you get the probability of getting the correct answer.

Introduction to college entrance examination:

1. The national unified entrance examination for colleges and universities, referred to as the "College Entrance Examination", is a selective examination for qualified high school graduates or candidates with equivalent academic qualifications.

2, the Ministry of Education requires the provinces (autonomous regions and municipalities) examination subject name and the national unified examination subject name must be consistent with the national unified examination schedule.

3. Generally, the subjects who take the exam are full-time ordinary high school graduates and China citizens with the same academic ability. Enrollment is divided into two categories: science, engineering, agriculture, medicine (including sports) and literature and history (including foreign languages and art). Colleges and universities should plan and expand enrollment according to candidates' scores and enrollment regulations, comprehensively measure morality, intelligence, physique and beauty, and select the best candidates.