Question

Which of the following operations are not commutative for whole numbers?

• A. Addition
• B. Subtraction
• C. Division
• D. Multiplication

Answer 1

Answer: (B), (C)

The correct options are
B Subtraction
C Division

Commutative property states that any finite sum or product is not altered by reordering its terms or factors. Among the given operations, addition and multiplication obey commutative property.
6 + 5 = 5 + 6 Commutative property of addition
6 - 5 = 1 whereas 5 - 6 = -1 that is not defined for whole numbers.
3 $\times$ 6 = 6 $\times$ 3 Commutative property under multiplication
4 $÷$ 2 = 2 but 2 $÷$ 4= 0.5 that is not defined for whole numbers.