Mathematics

If A = {2, 4}, which of the following is a subset of A?

How many subsets does the set {a, c, e} have?

Which set is a proper subset of {−1, −2, −3}?

Which set has only one subset?

Which set has no proper subset?

How many elements are in the power set of {1, 3, 5, 7, 9}?

How many elements are in the power set of {0, 1, 2, 3, 4, 5}?

What is the power set of {a, b}?

How many subsets does a set containing 4 elements have?

Which statement is correct?