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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By what number should we multiply so that the product may be?

RD Sharma - MathematicsVerify the property: by taking:

(i)

(ii)

(iii)

(iv)

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RD Sharma - MathematicsName the property of multiplication of rational numbers illustrated by the following statements:

(i)

(ii)

(iii)

(iv)

(v)

(vi)

(vii)

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(iii)

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RD Sharma - Mathematics