I'm getting different answers.. can u give a more clear explanation?
Add two numbers
Return the 3n+1 sequence for n
Distance walked 1D
Dimensions of a rectangle
The number of trailing zero digit of a factorial
Smallest n, for n! to have m trailing zero digits
The last non-zero digit of a factorial
Under the sea: Snell's law & total internal reflection
Number of even divisors of a given number
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