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5 cards from this section. Quick, good the night before a test.
Define the term 'empty set'.
Think about a set that has zero members.
Give an example of a singleton set.
Remember, it has only one item.
What is the roster method?
Think about how elements are presented in this method.
True or False: The empty set is a subset of every set.
Consider what it means to have no elements.
Given a set S = {2, 4, 6, 8}, find its power set and explain the reasoning.
Remember, each element can be present or absent in a subset.
If a set has a cardinality of 5, how many subsets can you expect to find in its power set?
Think about powers of 2 relating to the total number of combinations.
6 more questions in this section. Enroll free to practise them all.
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