12 Days of Christmas
99 Bottles of Beer
Abundant Numbers
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Christmas Trees
2,135th1,100th
Cubes
Diamonds
Divisors
Emirp Numbers
Evil Numbers
Fibonacci
Fizz Buzz
Happy Numbers
Intersection
Leap Years
Leyland Numbers
Lucky Tickets
Niven Numbers
Odious Numbers
Pangram Grep
Pascalβs Triangle
Pernicious Numbers
Prime Numbers
Rock-paper-scissors-Spock-lizard
Roman to Arabic
Seven Segment
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