Q. 64.8( 8 Votes )

Which of the following expressions shows that rational numbers are associative under multiplication
A.

B.

C.

D.

Answer :

The question is incorrect.


The correction required is in option1 ,infront of it should be either (-) sign or ( + ) sign.


Let only take one case of ( + ) sign infront of .


The equation now becomes


This equation follow associative property of rational numbers i.e.


a + (b + c) = (a + b) + c.


Hence,(a) is answer.


Other options are irrelevant they do not follow the associative property.

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