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Does every rational number have a multiplicative inverse? Explain why or why not. Please help ASAP!!! :(

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1 and -1 are the only rational numbers which are their own reciprocals. No other rational number is its own reciprocal. ... We know that there is no rational number which when multiplied with 0, gives 1. Therefore, rational number 0 has no reciprocal or multiplicative inverse.
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