### 12 Days of Christmas

32^{nd}

### 99 Bottles of Beer

24^{th}

### Abundant Numbers

13^{th}

### Arabic to Roman

22^{nd}

### Brainfuck

10^{th}25

^{th}

### CSS Colors

### Christmas Trees

8^{th}37

^{th}

### Cubes

16^{th}

### Diamonds

10^{th}

### Divisors

42^{nd}15

^{th}16

^{th}

### Emirp Numbers

3^{rd}

### Evil Numbers

6^{th}34

^{th}

### Fibonacci

18^{th}24

^{th}

### Fizz Buzz

55^{th}3

^{rd}24

^{th}

### Happy Numbers

10^{th}

### Leap Years

23^{rd}11

^{th}10

^{th}

### Leyland Numbers

### Lucky Tickets

### Morse Decoder

31^{st}

### Morse Encoder

15^{th}

### Niven Numbers

13^{th}

### Odious Numbers

34^{th}

### Ordinal Numbers

13^{th}

### Pangram Grep

7^{th}42

^{nd}

### Pascal’s Triangle

32^{nd}

### Pernicious Numbers

27^{th}

### Poker

12^{th}

### Prime Numbers

27^{th}

### Quine

1^{st}

### Rock-paper-scissors-Spock-lizard

15^{th}

### Roman to Arabic

19^{th}

### Rule 110

18^{th}

### Seven Segment

18^{th}

### Sierpiński Triangle

14^{th}

### Spelling Numbers

14^{th}

### Sudoku

9^{th}

### Ten-pin Bowling

3^{rd}8

^{th}

### Tongue-twisters

### United States

### λ

23^{rd}

### π

22^{nd}

### τ

15^{th}

### φ

16^{th}

### √2

66^{th}

### 𝑒

36^{th}