For given positive integer n, take factorial of that number. How many trailing zeros does it have?
Example: factorial(11) = 39916800
Its last zero-digit count is 2.
Optional: Can you make an efficient algorithm for a very large n?
Distance walked 2D
Back to basics 6 - Column Vector
05 - Vector Equations 3
Dimensions of a rectangle
The last non-zero digit of a factorial
Equal temperament - musical notes and frequency
Smallest n, for n! to have m trailing zero digits
Number of paths on a 3d grid
Make a rainbow matrix (follow-up to checkerboard matrix)
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