what are the different base numbers used for?

Question

base2 is binary? or it should be...?
base11 is normal?

but there are many, i made a code that has 37 unique ones

can someone explain them?
https://code.sololearn.com/cKkYhU5P7No4/?ref=app

Answer 1

Our decimal system has base 10. It has the numbers 0 - 9.
binary: base 2 (numbers: 0 & 1)

But I don't know how to convert from one system to another. But on the wikipage there is a list of some systems and where they are used. (btw: base = radix)
https://en.m.wikipedia.org/wiki/Radix

Answer 2

Decimal is used because we have ten fingers. Computers are digital (off/on) so we use binary. Octal and hexadecimal are easy ways to represent binary

Answer 3

Number system are based on exponents. 10 raised to the power of 2, hundreds. 10 to the power of 3, thousands... and so on..

2 raised to 2 - 4, 2 raised to 3 - 8.... and so on

Answer 4

Denise Roßberg thank you so much

Answer 5

Your welcome :)