Back to basics 23 - Triangular matrix
Find number of days
Determine if input is a perfect number
Max index of 3D array
Combined Ages 1 - Symmetric, n = 3
Pattern Recognition 3 - Variable Unit and Array Length (including cell arrays)
Approximation of Pi (vector inputs)
Lights Out 5 - 5x5, 10 moves
Divisible by 13
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