1. C
2. D
3. B
4. A
5. E
6. B
7. D
8. C
9. A
10. E
Commutative: ab=ba
Associative: (ab)c=a(bc)
Identity: a(1)=a
Distributive: a(b+c)=ab + ac
Zero: a(0)= 0
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Answers & Comments
1. C
2. D
3. B
4. A
5. E
6. B
7. D
8. C
9. A
10. E
Commutative: ab=ba
Associative: (ab)c=a(bc)
Identity: a(1)=a
Distributive: a(b+c)=ab + ac
Zero: a(0)= 0