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
Return the largest number that is adjacent to a zero
Check if sorted
Project Euler: Problem 7, Nth prime
Generate a vector like 1,2,2,3,3,3,4,4,4,4
Find the 9's Complement
Double the next!
Get the value 100
Approximate the inverse tangent by power series
Say type of roots in quadratic equation
Ratio between sum of primer numbers and non-prime numbers
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