In a sense, this is so difficult to answer, I know(^^;
You know, sometime yourself is the best boss you may ever know!
Sums with Excluded Digits
Distance walked 2D
We love vectorized solutions. Problem 1 : remove the row average.
Volume and area of a sphere
Can you beat the lottery?
Find the next prime number
Dice face matrix!
Find number patterns in rows of a matrix...
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