Our number system is based on

Our number system is based on the decimal system, also known as the base-10 number system. This means that we use 10 digits (0-9) to represent all possible numbers. Each digit's value is determined by its position in the number.

For example, in the number 153, the digit 1 represents 1 hundred (10^2), the digit 5 represents 5 tens (10^1), and the digit 3 represents 3 ones (10^0). These values multiplied by their respective powers of 10 are then added together to give the overall value of the number.

Other number systems exist as well, such as the binary system (base-2) which uses only 0 and 1, and the hexadecimal system (base-16) which uses 16 symbols (0-9 and A-F). However, the decimal system is the most commonly used system in our everyday life.