Integers: 6001.
Real numbers: There is no such number. You can get closer and closer, yet there will always be a smaller number (6000.1, 6000.01, 6000.001, ... you can go on and on).
6001
Neither is greater than the other.
Neither. They are equal.
???
no 12000 is loser
2588
6000 mL is greater than 5 L6000 mL = 6 L > 5 L
less than
Yes.
6.1 x 103
6000 pounds is equal to 3 tons
4 liters greater or less than 3000 milileter