Validity

Could you determine whether the argument is valid/invalid if:

1. Its premisses are true and its conclusion is true.
2. Its premisses are consistent with its conclusion.
3. Its premisses are necessarily true and its conclusion is true.
4. Its conclusion is inconsistent with its premisses.
5. Its conclusion is inconsistent with its premisses, and the premisses are consistent.
6. The negation of its conclusion is inconsistent with the negation of one of the premisses, and the argument would not be valid without this premiss.