Sum of first n terms of a harmonic progression
Rotate input square matrix 90 degrees CCW without rot90
Multiply 2 numbers
Magic is simple (for beginners)
Dimensions of a rectangle
Rule of mixtures (composites) - lower and upper bounds
5 Prime Numbers
Scrabble Scores - 5
Scrabble Scores - 2
Combined Ages 1 - Symmetric, n = 3
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