Remove the polynomials that have positive real elements of their roots.
Right and wrong
Omit columns averages from a matrix
Multiply a column by a row
Add two numbers
Divisible by n, Composite Divisors
Lights Out 11 - 5x5, with wrapping, x moves
Legend of Zelda - Rupee Count (Compact)
Divisible by 12
Mechanical Advantage of a Gear Train
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