Richard,Kenn, Jerk, Dave and Paster line up at a ticket window

Richard,Kenn, Jerk, Dave and Paster line up at a ticket window. In how many ways can they arrange themselves so that Dave is first in line from the window?

AQuA-RAT — Algebra Question Answering with Rationales (Ling et al., DeepMind, 2017) · train #71148