The question in my lesson plan test was: "Il a vu Paul et Sam ? -Non, ________ ."
My answer, "Il n'a pas vu Paul et Sam." was marked wrong. And the correct answer given is:
"Il n'a vu ni Paul ni Sam." "Has he seen Paul and Sam? -No, he hasn't seen Paul or Sam."
Wouldn't the more accurate English be: "No, he hasn't seen either Paul or Sam." ?
And, therefore "Il n'a pas vu Paul et Sam." would be the negation for "Il as vu Paul et Sam?"
Thank you for your explanation.