Answer 1

My first ruby 🤓
https://code.sololearn.com/cfgib10BJShf/?ref=app

Answer 2

Java one-liner.
https://code.sololearn.com/cuVIkAL06oNA/?ref=app

Answer 3

https://code.sololearn.com/cIGAvmKBZ3ga/?ref=app

Answer 4

https://code.sololearn.com/ctBthA5yMQOC/?ref=app

Answer 5

https://code.sololearn.com/c56jORGJZ7FJ/?ref=app

Answer 6

I'm going to use my calculator program that supports hexadecimal, decimal, octal, and binary for this.
https://code.sololearn.com/WAFrAL7FHPR2/?ref=app

Answer 7

https://code.sololearn.com/WBU6UjIarh7S/?ref=app

Answer 8

https://code.sololearn.com/cLByIV1R7f6z/?ref=app
Even converts floats...

Answer 9

My code in C# 😀 https://code.sololearn.com/c29g7ex7qNeb/?ref=app

Answer 10

Here is another. It shows the representation as 8/16/32/64 bits number (It actually reads the number bit by bit):
https://code.sololearn.com/cr3aHhC6D6va/?ref=app

Answer 11

https://code.sololearn.com/chiyPtkh1GZa/?ref=app

Answer 12

As an integer to binary converter is too easy, I did It from integer to any base. Hope It counts anyways =D
https://code.sololearn.com/crkTwmaIm8EN/?ref=app

Answer 13

https://code.sololearn.com/ccmft3qJhlfU/?ref=app

Answer 14

https://code.sololearn.com/cT8GszaEnQvX/?ref=app
https://code.sololearn.com/c0s59si9nGdw/?ref=app

Answer 15

https://code.sololearn.com/c31Ds9XwaFn1/?ref=app

Answer 16

here's my try
https://code.sololearn.com/cI9Ycz153n5b/?ref=app

Answer 17

https://code.sololearn.com/c9WjC7vhNG2B/?ref=app