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Assessment
What is the identity element in the group of integers under addition?
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Which of the following sets under multiplication forms a group?
The set of all non-zero rational numbers
The set of all integers
The set of natural numbers
The set of complex numbers with zero
Which of the following properties is NOT necessarily true for a ring?
It has an additive identity.
It has a multiplicative identity.
The multiplication is associative.
The addition is commutative.
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