Spookily similar to Problem 381 ("Angle between two vectors")....
Back to basics 14 - Keywords
Get the elements of diagonal and antidiagonal for any m-by-n matrix
Sophie Germain prime
Rounding off numbers to n decimals
GJam 2013 Veterans: Baby Height Prediction
Rubik's Cube: 30 Moves or Less : Cody Size
GJam March 2016 IOW: Password Single
Loading/Expanding a ZIP file from File Exchange
Primes Faster for Large N
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