1)
What was the question "Yadata Ki Az Tivaled"?
1.
Rashi: Did you know all this, and you were born, when I created them?!
2.
Malbim: When I suspended the luminaries in place, did you know in which year you will be born?
2)
Why did He add "u'Mispar Yamecha Rabim"?
1.
Ibn Ezra: Before you were born, did you know how many days you will live? Malbim - He speaks as if had Iyov been there at the time, he would have known the years allotted to each creation, including himself.
