If r = 199,999 and s = 991,999, which of the following…

If r = 199,999 and s = 991,999, which of the following is the units digit of r^5 + s^4?

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

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AQuA-RAT — Algebra Question Answering with Rationales (Ling et al., DeepMind, 2017) · train #45435

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