Challenges points

I have completed some challenges and i had 36 points. So i completed one more and it said that the trophy worth 10 points. But my points became 37. How does it work?
n3feli {l Wrote}:I have completed some challenges and i had 36 points. So i completed one more and it said that the trophy worth 10 points. But my points became 37. How does it work?