In 3D and permutation 3, there is a special phenomenon, that is, the corresponding number and complement of lottery numbers. This special phenomenon accounts for more than 98%. Usually people correspond to 0 1234 to 56789 in turn. That is, 0 and 5, 1 and 6, 2 and 7, 3 and 8, 4 and 9 correspond, that is, the sum of the two codes is equal to 5, 1 and 9, 2 and 8, 3 and 7, 4 and 6 are complementary, that is, the sum of the two codes is equal to 10.
Complement introduction
In our daily life, we often encounter the concept of complement. For example, if the clock indicates six o'clock and wants it to point to three o'clock, we can turn the minute hand clockwise by nine squares or counterclockwise by three squares, and the result is the same. Because the hour hand turned 12 hours, and 12 was automatically lost without being displayed in the clock, that is, 15- 12=3, and the minutes of 15 and three minutes are consistent in the clock representation.
Imagine that when it comes to clocks, the effect of turning nine squares clockwise and three squares counterclockwise is the same at any time. We will position the direction positively and negatively, that is, -3 is equivalent to +9. In mathematics, 12 is written as mod 12, and +9 is -3, written as the complement of 12.