If the units digit of n^43 is 7, which of the following…

If the units digit of n^43 is 7, which of the following could be the value of n? I. n = 41 II. n = 43 III. n = 47

This problem repeats another one in the library (at most with different numbers), so it's left out of browsing.

AQuA-RAT — Algebra Question Answering with Rationales (Ling et al., DeepMind, 2017) · train #52364