Sometimes I'll put coffee in my usual water bottle. Even after I drink it and put water in it, I can still slightly taste coffee, since there's a few drops left. After a few refills, it fades, but I still sometimes wonder what tiny proportion of my water is coffee. In this challenge, you'll take ...

Introduction You are tasked with creating a function that takes a binary number as input and determines whether it meets specific criteria based on combinatorics. Challenge Check if the number of '1's in the binary representation is even or odd, and if the total number of bits is a prime number. ...

Imagine an infinite symmetrical triangle of pegs, where the rows have size 1, 2, 3, ... (similar to Pascal's Triangle). All the pegs are red apart from k (your input), which are blue. A ball is then dropped from the top. Each time it hits a peg it has an equal chance to bounce left or right, movi...