Find out the wrong term in the series 2, 10, 20, 200…

Find out the wrong term in the series 2, 10, 20, 200, 4000, 6000

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 #31462