Jack Bauer → 9

4=4
5=5
1=2
7+8=10
0+9=12
11+22=14
123+456=?

Determine the rule applied to the equations above, and identify the value of "?".

Answer (numeric):

Can you make it within 24 hours?
(One-digit numeric) ≤ 7
Where do you find "Jack Bauer"?
Imagine the logo of the drama.

 ©2019 Gran-Fénix.com --- Produced by Nao Fénix