There are 34 people in a party

There are 34 people in a party. If everyone is to shake hands with one another, how many hand shakes are possible?

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 #8142