the set of all real numbers under the usual multiplication operation is not a group since Options: A . &nbspzero has no inverse B . &nbspidentity element does not exist C . &nbspmultiplication is not associative D . &nbspmultiplication is not a binary operation

the set of all real numbers under the usual multiplication operation is not a

Question

the set of all real numbers under the usual multiplication operation is not a group since

Options:

A . zero has no inverse

B . identity element does not exist

C . multiplication is not associative

D . multiplication is not a binary operation

Answer: Option A
Explanation :

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