Make a Palindrome Number
Replace NaNs with the number that appears to its left in the row.
7 segment LED display
Basic electricity in a dry situation
Convert a vector into a number
Under the sea: Snell's law & total internal reflection
The number of trailing zero digit of a factorial
Number of paths on a 3d grid
Number of paths on a n-dimensional grid
The last non-zero digit of a factorial
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