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Q.

State true or false: -1 is the multiplicative identity for rational numbers.


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a

True

b

False  

answer is B.

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Detailed Solution

Given a statement, -1 is the multiplicative identity for rational numbers.
We need to check if the given statement is true or false.
1 is the multiplicative identity for rational numbers, not -1.
When a rational number is multiplied with 1, we get the same number itself.
That is why it is called multiplicative identity.
1 is the multiplicative identity for rational numbers.
Therefore, the statement is false.
Hence, 2 is the correct option.
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