Test 4 is wrong; y_correct should be [1; 2; 4]
I´m afraid all tests are correct. But thanks anyway!
Finding Perfect Squares
Project Euler: Problem 10, Sum of Primes
Sum the Digits of a Number
Is the input divisible by 3?
Back to basics - mean of corner elements of a matrix
Say type of roots in quadratic equation
Get the mean digit
Sum of a geometric series
Ratio between sums of prime and non-prime numbers
Approximate the inverse tangent by power series
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