Question

If a and b are two whole numbers, then commutative law is applicable to subtraction if and only if

A

B

a b

C

D

Medium

Solution

verified
Verified by Toppr
Correct option is A)

Commutative property :Β The subtraction of whole numbers is not commutative, that is, if and are two whole numbers, then in general is not equal to .

Verification:

We know that but which is not a whole number. Thus, for two whole numbers and if , then is a whole number but is not possible and if , then is a whole number but is not possible.

Now, if then, which is also a whole number.

Hence,Β whole numbers are commutative underΒ subtraction if and only if .

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