Laying in bed last night I was trying to sleep and doing math in my head to help. I don't know how to explain this, but I'll try.
So, 10=10+9+8+7+6+5+4+3+2+1 then 10=55.
Or, 6=6+5+4+3+2+1 then 6=21
Or 8=8+7+6+5+4+3+2+1 then 8=36
And so on...
I couldn't figure out how to Google this, but I was wondering if this had a name, or if it is used for anything. It definitely helped me sleep, haha, so there's that!