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Zero is the additive identity for addition. For example,0+a=a,where a is a rational number. What is the multiplicative identity n such that a*n=a for any rational number a?
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Zero is the additive identity for addition. For example,0+a=a,where a is a rational number.

What is the multiplicative identity n such that a*n=a for any rational number a?

User Grnbeagle
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the answer is 1. any number x 1= that number
User Yovanny
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