Answers

2014-06-14T16:44:52+08:00
Universal set (U) - is the set that contains all objects under consideration.
Null Set - is an empty set. The null set is a subset of any set.
Equal Sets- two sets are equal if and only if they have exactly the same elements.
Equivalent Sets- two sets are equivalent if there is one-to-one correspondence between the two given sets.
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