Write a function that calculates the ratio between the sum of the prime numbers lower or equal than x, and the sum of the non-prime numbers lower than x.
test case #2 is not correct.
Back to basics 1 - Saving
Back to basics 6 - Column Vector
06 - Matrix Equations 2
Change matrix to vector
Ratio between sum of primes and sum of factors
Say type of roots in quadratic equation
Check if is a square
Alternating 1´s and 0´s in a matrix
Double the next!
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