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Question

The multiplicative identity for integers is

A
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1
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0.1
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Solution

The correct option is A 1
The multiplicative identity of any integer a is a number b which when multiplied with a, leaves it unchanged,
i.e a×b=a

Hence this can only happen if b=1
i.e. a×1=a

Hence, the multiplicative identity for all integers is 1.

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