12 Days of Christmas
6th99 Bottles of Beer
9thAbundant Numbers
10thArabic to Roman
4thChristmas Trees
6thCSS Colors
4thCubes
5thDiamonds
5thDivisors
193rd
7thEmirp Numbers
7thEvil Numbers
155th
8thFibonacci
35thFizz Buzz
459th
254th
32ndHappy Numbers
7thLeap Years
151st
18thLeyland Numbers
9thMorse Decoder
3rdMorse Encoder
4thNiven Numbers
15thOdious Numbers
125th
8thOrdinal Numbers
32ndPangram Grep
10thPascal’s Triangle
8thPernicious Numbers
11thPrime Numbers
172nd
5thQuine
41stRock-paper-scissors-Spock-lizard
3rdRoman to Arabic
5thRule 110
8thSeven Segment
6thSierpiński Triangle
8thTongue-twisters
8thUnited States
6thVampire Numbers
5thλ
8thπ
11thτ
6thφ
6th√2
6th𝑒
6th