The ancestors felt that counting was too tired, so they invented addition. If there is addition, there must be subtraction. However, it is found that natural numbers are not enough through subtraction, so there are negative numbers, positive numbers and negative numbers collectively referred to as integers;
Later, I felt that addition was too tired, so I invented multiplication. If you multiply, you will divide. But through division, I found that integers are not enough, so I invented fractions (decimals), and I also called integer fractions rational numbers.
Later, I felt that multiplication was too tired, so I invented the multiplier. Where there is a multiplier, there must be a square root. But through the square root, I found that rational number is not enough, so I invented irrational number, and also called rational number irrational number as real number. It was also found that negative numbers need to be squared, and real numbers are not enough, so imaginary numbers were invented, collectively called complex numbers.
Later, I felt that the motivation was too tired, so ... I had exponential logarithm transcendental number. ...
……
In the same way, we can see that the number increases by 2 (n- 1) for every N-level operation, so there are infinite numbers.