Remove all the words that end with "ain"
Back to basics 5 - Clipboard
Back to basics 25 - Valid variable names
Find out of matrix transpose Complex conjugate
Fractal: area and perimeter of Koch snowflake
The last non-zero digit of a factorial
Smallest n, for n! to have m trailing zero digits
Under the sea: Snell's law & total internal reflection
Number of even divisors of a given number
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