Nice test cases!
With a more robust Test Suite many/most of the submissions would fail for ignoring the Problem Statement instruction that primes must be less than n. Please add test cases in which the input x (or "n") is itself a prime.
Swap the input arguments
Count up then down
Who has power to do everything in this world?
05 - Vector Equations 1
Find out total non zero element of matrix
Linear system of equations
Determine the roots of a cubic equation
Create a constant offset.
Energy of an object
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