10,000 yuan means more than 10,000 yuan, such as 11,000 yuan. Less than 10,000 yuan means that the amount of money is generally close to 10,000 yuan, which generally means more than 8,000 yuan.

Englishman harriot began to use the common symbol "greater than" in 163 1. And "less than" symbol.

According to a letter written by Goldbach to Euler in June of 1734+0, the common symbols of "≧" and "≦" are a Frenchman P? Cloth (1698- 1758) was first adopted, and then it gradually became popular.

Poincare and Borel introduced the symbols "<< (far less than) and" > >; " (much greater than), it was quickly accepted by the mathematical community and is still in use today.

Greater than or equal to and less than or equal to:

Combine the two symbols "=" of ">" organically and get the symbol "≥". When one value is greater than another value or two numbers are equal, the greater than or equal sign "≥" is used, which is read as "greater than or equal to" and sometimes called "not less than". For any two real numbers A and B, their corresponding points A and B can be found on the same axis. If point A is to the right of point B or A and B coincide, then A ≥ B..

Similarly, put "