True
The statement that the difference between any two whole numbers is always a whole number is indeed true. Let's break this down further:

Whole Numbers
Whole numbers are a set of numbers that include all the natural numbers (1, 2, 3, ...) along with zero. These numbers are used for counting objects and are represented by the symbol "W" in mathematics.

Difference between Whole Numbers
When we subtract one whole number from another, we are essentially finding the difference between them. For example, if we subtract 5 from 10, the difference is 5. This difference is always a whole number because both numbers involved in the subtraction are whole numbers.

Properties of Whole Numbers
Whole numbers have the property that when you add, subtract, or multiply them, the result is always a whole number. This property holds true for the difference between two whole numbers as well.

Example
- If we subtract 7 from 12, the difference is 5, which is also a whole number.
- Similarly, if we subtract 20 from 30, the difference is 10, which is again a whole number.
Thus, it is evident that the difference between any two whole numbers is always a whole number. This property of whole numbers makes them a fundamental part of arithmetic operations and mathematical calculations.