I'm getting different answers.. can u give a more clear explanation?
Return the 3n+1 sequence for n
Replace NaNs with the number that appears to its left in the row.
give nth decimal place of pi
Acid and water
Sophie Germain prime
Make a rainbow matrix (follow-up to checkerboard matrix)
Under the sea: Snell's law & total internal reflection
Smallest n, for n! to have m trailing zero digits
The last non-zero digit of a factorial
Number of even divisors of a given number
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