Write a function that concatenates whole numbers.
numcat(111,222) should return 111222
numcat(1,2,3,4,5) should return 12345
Remove all the words that end with "ain"
Project Euler: Problem 5, Smallest multiple
Specific Element Count
Calculate the area of a triangle between three points
Getting the indices from a matrice
Airline Ticket Mod7 Checksum
What is the nth step in Conway's Life?
Distance between two GPS Coordinates
Find the first N zeros of the 666 function
Dudeney Numbers: Numbers which are the cube of their decimal sum
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