Equivalent Resistance of Parallel Resistors

[archaic]

I did this for fun, if you want to do it in an unconventional way, this would be useful in programming.
For $n$ resistors in parallel:
$$R_{total}=\frac{\prod_{i=0}^{n-1} R_{i}}{\sum_{i=0}^{n-1}(\prod_{j=0}^{n-2} R_{i+j \mod n})}$$

 

[davenn]

, this would be useful in programming.

too complex compared to the more simple and conventional way

 

[ZapperZ]

... or use this. There is no need to re-invent the wheel.

https://www.allaboutcircuits.com/tools/parallel-resistance-calculator/

Zz.