Write a function that calculates the ratio between the sum of primes numbers lower or equal to x, and the sum of the factors of x.
The 3rd test case, for x = 100; is wrong. Please correct it.
Done! thank you!
Test Suite problem #3 has an incorrect value for y_correct.
Replace NaNs with the number that appears to its left in the row.
Least common multiple of many numbers
multiply by three
Approximate the inverse tangent by power series
Alternate list of elements
Sum of a geometric series
Say type of roots in quadratic equation
Get the mean digit
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