(a) The term subset means a set that contains only some elements of a larger set.
(b) The formula to find the number of subsets of a given set is 2^n, where n is the number of elements in the set.
(c) The symbol for Subset is ⊆.
(d) Set A has 16 subsets.
(e) The elements of Set A are f, g, h, and i.
Set P = {21, 23, 25, 27, 29}
Set Q = {20, 21, 22, 23, 24}
(A) The elements of Set P are 21, 23, 25, 27, and 29.
(B) The elements of Set Q are 20, 21, 22, 23, and 24.
(C) Set P and Set Q are not equal because they have different elements, but they are equivalent because they both have the same number of elements.
Two examples of equal sets are {1, 2, 3} and {3, 2, 1}, and {a, b, c} and {c, a, b}. Two examples of equivalent sets are {1, 2, 3} and {2, 3, 4}, and {a, b, c} and {d, e, f}.
(A) Set F contains five even numbers between 80 and 88.
(B) Set G contains four names: James, Jack, John, and Jerry.
(C) Set P contains the names of five planets in our solar system: Venus, Neptune, Mars, Saturn, and Uranus.