Everyone, I've modified the test suite such that common cheats won't work; i.e., regexp/rep, interp1/2/3, num2str, str2num, etc. are disallowed! General numerical solutions, however, are most welcome.
Find nearest prime number less than input number
Derivative of polynomial
How many digits are there?
05 - Vector Equations 1
Divisible by 2
Shifted Hexagonal Tiling Dots in a Circle
Dots in a Diamond
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