Question

the whole numbers are not closed under substraction,why?​

Answer 1

Answer:

The set of whole numbers of whole numbers is closed under addition and multiplication because when I add or multiply any whole numbers, the result is always a whole number. The set of whole numbers is not closed under subtraction because 4 - 5 = -1, and -1 is not a whole number.

Answer 2

Step-by-step explanation:

The whole numbers are not closed under subtraction operation because when any two whole numbers are considered and from them one is subtracted from the other, the difference so obtained is not necessarilya whole number.