Provided with inputs year, month, day e.g. 2019,11,12, calculate the number of days until the next Christmas day, i.e. the next time it will be December 25
Implement simple rotation cypher
Add two numbers
Count up then down
Magic is simple (for beginners)
generate number in particular way
Calculate the area of a circle
Check if number is a square number
Check if integer is a prime number
Check if a number belongs in the fibonacci squence
Convert Fahrenheit to Kelvin
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