Write a function that gives the mean digit (round towards nearest integer) of an input and positive number. For example:
x = 264 --> y = 4
x = 128 --> y = 4
Test Suite problem #4 has an incorrect value.
Test suite #4 is incorrect
Find the sum of all the numbers of the input vector
Least common multiple of many numbers
Is it a number?
Find a Pythagorean triple
Say type of roots in quadratic equation
Alternating 1´s and 0´s in a matrix
Ratio between sum of primes and sum of factors
Approximate the inverse tangent by power series
Check if is a square
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