If the difference between two numbers is 4, then which of the following would be sufficient to determine the value of each of the numbers?

Indicate all possible values.

1. The sum of the numbers is 4.
2. The difference between the squares of the numbers is 16.
3. The square of the difference between the numbers is 16.
4. The sum of the squares of the numbers is greater than 8.
5. Twice the greater number is 8.
6. The smaller of the two numbers is less than 8.
7. The product of the two numbers is 0, and neither of the numbers is negative.