The second set of RMB three yuan currency
It's not just China. There are not many currencies with the denomination of 3 at all times and in all countries.
In 1-10, 1, 2, 5 and 10 are 'important numbers'. Both 1 yuan and 2 yuan can be combined into 3 yuan, 4 yuan and other denominations
In addition, the maximum probability of occurrence of 3 is only 18%, while the total probability of occurrence of 1, 2 and 5 is 90%.
An increase of RMB 3 will lead to a significant increase in circulation costs
Three yuan RMB is the rare currency in the second set of RMB in China, which is light green as a whole, also known as Su San currency. It is the only RMB paper currency with a face value of three yuan in China.
Due to the small amount of life, the current value of the whole product is about 40000 yuan each, and the highest value is more than 100000 yuan
The overall color of the coin is light green, 16 cm long and 7.2 cm wide, slightly larger than the current RMB 1 yuan. There are traditional three yuan characters on both sides of the front, 1953 on the bottom, six characters of the people's Bank of China on the top, and the picture of longyuankou stone bridge in Jinggangshan in the middle. The lace around the stone bridge is dark green, the background in the middle is yellow, and the pattern on the back of the note is flower Wen and the national emblem, the people's Bank of China in the middle of which are written in Chinese, Uyghur, Mongolian and Tibetan Three yuan words of the people's Bank of China
From the point of view of probability: among all the number permutations of 1-9, the probability of occurrence of 3 is only 18 at most, while the total probability of occurrence of 1, 2 and 5 is 90. If the currency with the face value of '3' is used, the probability of its appearance in circulation is about 16.7%, which proves that the role of the currency with the face value of '3' in the actual circulation is not significant, but will make the face structure of the currency unbalanced.