Compare two strings, whether they are equal or not.
Who knows the last digit of pi?
Sum of integers numbers
Create a square matrix of zeros of even order
Square root of a number
Solve expression II
Find Euclidean norm of given vector u.
Opposite task convert string hexadecimal numbers array into array of decimal numbers .
Find product of eigenvalues of n*n magic matrix.
Find cosine between two given vectors u and v.
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