If four coins are tossed, the probability of getting two heads and…

If four coins are tossed, the probability of getting two heads and two tails is?

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 #6953