Let U = {x/x is a female} A = {x/x is a mathematician} B = {x/x owns a pickup} C = {x/x owns a dog}
Describe in words a member of each of the following:
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(a) B (b) B U C (c) A - C
(a) To describe a member of set B, we need to find someone who owns a pickup. For example, a member of set B could be Sarah, who owns a pickup truck.
(b) To describe a member of the set B U C, we need to find someone who either owns a pickup or owns a dog, or both. For example, a member of set B U C could be Mark, who owns both a pickup truck and a dog.
(c) To describe a member of the set A - C, we need to find someone who is a mathematician but does not own a dog. For example, a member of set A - C could be Lisa, who is a mathematician but does not own a dog.