A cheat solution.
The fractions are not a simplify fractions.
Back to basics 23 - Triangular matrix
Rotate and display numbered tile
Set the array elements whose value is 13 to 0
Self-similarity 2 - Every third term
Fill-a-pix - Solution Checker
Rule of mixtures (composites) - reverse engineering
Lights Out 2 - 5x5, 4 moves
Pattern Recognition 2 - Known Unit Length, Various Array Length (including cell arrays)
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