OK. I figured out the issue with the test suite. Please check the absolute value of the difference when comparing the computed answers to the correct ones. Otherwise, you'll get some really silly answers. (Like this one! :-)
My, you are tricky, James, finding all those loopholes. I've fixed the test suite to check against upper and lower bounds of each answer.
I was just really curious why one of my answers worked when it didn't include a or b. Some experimentation and a lot of (now wrong) solutions narrowed it down. I had to use some of these equations in my senior project at college, so I knew that the dimensions were very important!
DNA N-Gram Distribution
Omit columns averages from a matrix
Create a square matrix of multiples
Implement simple rotation cypher
07 - Common functions and indexing 1
Divisible by 6
5th Time's a Charm
Highly divisible triangular number (inspired by Project Euler 12)
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