Very sneaky noticing this pattern in the answers.
Getting the indices from a vector
Calculate the Number of Sign Changes in a Row Vector (No Element Is Zero)
Area of a Square
Solving Quadratic Equations (Version 1)
Pi Digit Probability
Lights Out 14 - 5x5, four stages, x moves
Divisible by 9
Lights Out 13 - 5x5, three stages, x moves
Singular Value Decomposition
Divisible by 12
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