Isn't the answer infinity?

A charge \(+16\) C is fixed at each of the points \(x=3, 9, 15, \ldots, \infty \) on the \(x\)-axis, and a charge \(-16\) C is fixed at each of the points \(x=6, 12, 18, \ldots, \infty \) on the \(x\)-axis. Then find the potential at the origin due to these charges.

If the potential is of the form \(\frac { A\ln B }{ C\pi { \varepsilon }_{ 0 } } \), find \(A+B+C\), where \(A\) and \(C\) are co-prime and \(B\) is prime.

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