vectorization in N
Volume difference between Ellipsoid and Sphere
Create an n-by-n null matrix and fill with ones certain positions
Replace Nonzero Numbers with 1
Find the sum of n squares
Smallest n, for n! to have m trailing zero digits
Number of paths on a 3d grid
Under the sea: Snell's law & total internal reflection
Number of even divisors of a given number
Make a rainbow matrix (follow-up to checkerboard matrix)
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