Add two numbers
Replace all zeros and NaNs in a matrix with the string 'error'
Generate a vector like 1,2,2,3,3,3,4,4,4,4
The Answer to Life, the Universe, and Everything
The last non-zero digit of a factorial
The number of trailing zero digit of a factorial
Equal temperament - musical notes and frequency
Under the sea: Snell's law & total internal reflection
Number of paths on a 3d grid
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