12 Days of Christmas
60th
99 Bottles of Beer
68th
Arabic to Roman
13th
Christmas Trees
41st
Divisors
47th
Evil Numbers
84th
Fibonacci
87th
Fizz Buzz
180th
Happy Numbers
51st
Leap Years
83rd
Morse Decoder
14th
Morse Encoder
15th
Odious Numbers
68th
Ordinal Numbers
19th
Pangram Grep
48th
Pascalβs Triangle
26th
Pernicious Numbers
45th
Prime Numbers
47th
Rock-paper-scissors-Spock-lizard
13th