How do sololearn calculated who is#1?

Question

Is it normal that there are many #1 player in one country?

Answer 1

It's basically based upon XPs that whoever having the maximum XPs is #1 in his or her particular country

Answer 2

XP

Yes

Answer 3

But there are multiple #1 afaics.
Is this per level?

Answer 4

Nilesh is right

Answer 5

And THAnGArAJ is also right

Answer 6

Agree too