1)
Why does it say that [all] of Yaakov's sons were born in Padan Aram? Binyamin was not born there!
1.
Riva #1: Since Rachel prayed for another son while in Padan Aram, it is as if he was born there.
2.
Riva #2: Since the majority were born in Padan Aram, it is as if all were born there.