Even in the most trivial cases this can be seen to be true, for instance, by asking how many different combinations of resistors in parallel are equivalent to a given combined resistor.
Čak i u najtrivijalnijim slučajevima se ovo može pokazati kao istinito, na primer kada se zapitamo koliko različitih kombinacija paralelnih otpornika je ekvivalent datom kombinovanom otporniku.