10 points! ...Which of these things are "Exact numbers" and "NOT exact numbers?"?

Question

1. the number of millimeters in a cubic meter of water

2. the temperature of the surface of the sun

3. the number of students in your chemistry class

4. the mass of a 32-ounces can of coffee

5. the mass of a postage stamp

6. the average height of students in your school

I have to know which of these things that I mentioned above are either "Exact Numbers" or "NOT exact numbers."

I will give 10 points. thank you!

Answer 1

All six of these are one or the other...

Answer 2

1, 3, 4

Answer 3

1. Is

2. Not

3. Not

4. Not

5. Not

6. Not

If all coffee products and postage stamps were all made exactly the same. then the Not could change to Is.

Number of students vary from day to day, including those in your class.