Pick something special. See if the laws of the answers are all related to a kind of numbers. For example, when three answers are yes and one answer is no, choose among the positive answers. For example, there are three answers divisible by three, and all three answers are even numbers. In this case, you can directly exclude one option to continue the comparison. You can also choose inversion. If you can't do it in the forward direction, you can do it in the reverse direction

Mathematics multiple-choice questions have the opposite trick. When one of the options is positive X and the other is negative X, choose between them. There is only one correct answer. If there are two completely opposite meanings in the option, the correct answer is probably somewhere in between.

Extreme value method: in seeking extreme value, value and analytic geometry, find the extreme situation for analysis.

Conventional method: the first question in mathematics will not be a, and the last question will not be a.

The question looks simple in numbers, the answer is complicated, the question looks complicated in mathematics, and the answer looks simple.

Generally, the option with the root sign is not selected, and the option with 1 is generally selected as 1.

Graphic problem, select a special value.

Mathematical multiple choice formula 1, the answer has radical symbols, don't choose.

2. If the answer is 1, please select.

3. When all three answers are yes, choose the right one.

4. When one is positive X and the other is negative X, choose one of them.

If the question looks simple, then the answer is complex, and vice versa.

6. If you choose the previous question and this question, it is not suitable to do this article if three identical ones appear in succession.

7. A good answer depends on your eyes.

8. when none of the above is practical, choose B.