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Multiplicative Identity

Question 95 S...

Question

Question 95

State whether the statement is True or False.

(-1) is not a multiplicative identity of integers.

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Solution

True
1 is multiplicative identity for integers, i.e. $a \times 1 = 1 \times a = a$ for any integer a.

And for -1, a $\times$ (-1) = -a $\neq$ a

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Multiplicative Identity

Standard VI Mathematics

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