All the championship possibilities

4 drivers head into the final round of the season with a chance of winning the Formula 1 world title. After Brazil, the standings are as follow:

Fernando Alonso 246
Mark Webber 238
Sebastian Vettel 231
Lewis Hamilton 222

Fernando Alonso will definitely win the championship if he finishes in the top 2

Alonso will also win the championship with these set of results:

Finish 3rd and hope
Webber is 2nd or lower

Finish 4th and hope
Webber is 2nd or lower

Finish 5th and hope
Webber is 2nd or lower
Vettel is 2nd or lower

Finish 6th and hope
Webber is 3rd or lower
Vettel is 2nd or lower

Finish 7th and hope
Webber is 4th or lower
Vettel is 2nd or lower

Finish 8th and hope
Webber is 4th or lower
Vettel is 2nd or lower

Finish 9th and hope
Webber is 5th or lower
Vettel is 3rd or lower

Finish 10th and hope
Webber is 6th or lower
Vettel is 3rd or lower

Finish 11th or lower and hope
Webber is 6th or lower
Vettel is 3rd or lower
Hamilton is 2nd or lower

Mark Webber needs to finish in the top 5 to have any chance of winning the world championship

For Webber to win the championship he needs to either:

Win the race and hope
Alonso is 3rd or lower

Finish 2nd and hope
Vettel is 3rd or lower
Alonso is 6th or lower

Finish 3rd and hope
Vettel is 2nd or lower
Alonso to 7th or lower

Finish 4th and hope
Vettel is 2nd or lower
Alonso is 9th or lower

Finish 5th and hope
Vettel is 3rd or lower
Alonso is 10th or lower

Sebastian Vettel needs to finish in the top 2 to have any chance of winning the championship

For Vettel to win the championship he needs to either:

Win the race and hope
Alonso is 5th or lower

Finish 2nd and hope
Webber is 5th or lower
Alonso is 9th or lower

Lewis Hamilton needs to win the race or else he can't win the championship.

So for Hamilton to win the championship he needs to:

Win the race and hope
Vettel is 3rd or lower
Webber is 6th or lower
Alonso is 11th or lower