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Q.

Out of the following, which option states commutative property?


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a

-2×(1+8)=(-2×1)+(-2×8)

b

-16×19=19×-16

c

1+(2+3)=(1+2)+3

d

    All of the above 

answer is B.

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Detailed Solution

The given options are -2×(1+8)=(-2×1)+(-2×8),
 -16×19=19×-16, 1+(2+3)=(1+2)+3.
We know that,
Commutative property means A×B=B×A.
By observing the given options and comparing it with the commutative property,
We can see that, -16×19=19×-16, is similar to the property.
Therefore, -16×19=19×-16 states the commutative property.
Hence option 2 is correct.
 
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