Answer:
6
Step-by-step explanation:
1-2-3-x-x
1-3-2-x-x
2-1-3-x-x
2-3-1-x-x
3-1-2-x-x
3-2-1-x-x
i can't see clear
(2,4)
I'm not sure in the slightest but with the formula I learned I think this is correct