Find the sum, given the first term t1, the common ratio r, and number of terms n.
If input t1=1, r=1, n=7 then output y=7
If input t1=10, r=10, n=5 then output y=111110.
Most nonzero elements in row
Solve the Sudoku Row
Is this matrix orthogonal?
Return unique values without sorting
Check if sorted
Surface Fit z(x,y)
pressure to dB?
letter yes yes & letter no no
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