Is the 20th of a month with a number of 3 1 even or odd in Zhangqiu, Jinan?

Jinan Zhangqiu Kesan 3 1, the 20th of a month is even. According to the relevant public information, the single number of the vehicle is 1 road, and the even number is 2 and 3. There are four people in a car. The first person takes route 2 and the second person takes route 3. Cycle until the end of the exam. Note: as long as the prompt is unqualified, stop or retake the exam on the spot, and there will be no substitution.