How is the Premier League winner decided?

Related questions

1. Can Arsenal get in Champions League?
2. Will Arsenal play Champions League next season?
3. Are Arsenal in the Champions League?
4. Who has the most clean sheets in the Premier League history?
5. How many golden boots does Ronaldo have?
6. Has anyone won the Premier League on goal difference?
7. Which club has the highest fans in English Premier League?
8. Which club has the highest trophies in the world?
9. Who is the oldest goalkeeper?
10. Who sponsors the Premier League?

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20. #difference
21. #goals
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24. #winner