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1. |
A monoid is called a group if _______a) (a*a)=a=(a+c)b) (a*c)=(a+c)c) (a+c)=ad) (a*c)=(c* |
A. | (a*a)=a=(a+c) |
B. | (a*c)=(a+c)c) (a+c)=ad) (a* |
C. | (a*c)=(a+c)c) (a+c)=a |
D. | (a*c)=(c*a)=e |
Answer» E. | |