What percentage of numbers from 1 to 50 have squares that end…

What percentage of numbers from 1 to 50 have squares that end in the digit 4?

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 #49481