How work's experience points?

Question

I need to know how work's the experience points, sometimes a do a challenge and the price is ej:7xp but if a lose i lose more xp than 7 or if I win i receive less.

Answer 1

https://www.sololearn.com/discuss/285079/?ref=app
https://www.sololearn.com/discuss/265734/?ref=app
https://www.sololearn.com/discuss/244728/?ref=app

Answer 2

https://www.sololearn.com/faq/#q13

What is XP?

XP stands for eXperience Points. You earn XP by participating in activities and improving your coding skills. These activities include completing a lesson/course, playing challenges, unlocking badges, and so on.

How are XPs calculated in the Challenges?

The XPs you gain/lose are unique to each match. Calculations take the opponents' levels into account. We use a modified version of the Elo rating system to calculate the points for each won/lost challenge. You can learn more about the Elo rating system here: https://en.wikipedia.org/wiki/Elo_rating_system