Sololearn play rewards

Question

Please can anyone explain to me how the points to be awarded at the end of sololearn play is calculated?

Answer 1

I think the point you mean is XP: https://www.sololearn.com/faq/#q13

Answer 2

https://en.m.wikipedia.org/wiki/Elo_rating_system

Answer 3

Thanks for the reply, CarrieForle