1) A set is a well-defined collection of objects. a) True b) False 2) The notation A = 1,2,3 is the correct way to write a set. a) True b) False 3) The set {0} is an empty set. a) True b) False 4) If A = {1,2} and B = {2,3}, then A ∪ B = {1,2,3}. a) True b) False 5) If A = {2,4,6}, then 5 ∈ A. a) True b) False 6) If A ⊂ B, then every element of A is in B. a) True b) False 7) The set {a, e, i, o, u} has 5 elements. a) True b) False 8) The complement of a set includes elements inside the set. a) True b) False 9) Order of elements matters in a set. a) True b) False 10) The universal set contains all elements under discussion. a) True b) False

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