Find the numeric mean of the prime numbers in a matrix.
Project Euler: Problem 7, Nth prime
middleAsColumn: Return all but first and last element as a column vector
Find the elements of a matrix according to a defined property.
Mastermind III: Solve in 1
Magic - Faro Shuffle
Rubik's Cube: 30 Moves or Less : Cody Size
Gene Sequence Contest: Retro
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