Tell me the slope
Sum of first n terms of a harmonic progression
Sum of diagonals elements of a matrix
Test Problem; Create a 5x5 array containing all ones
multiply an array by its position number
Prime number check (★★)
Sum of terms in a series 2 (★★★)
Matrix with increasing numbers (★★★★)
Average of corner elements of a matrix (★★)
Mo money, mo math #2! (★★★)
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