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On {0,...,12}, with R = {(a, b): a = b}, the set of elements related to 1 is
A{0, 1, 2}
B{1, 2}
C{1}
D{0, 1}
Answer & Solution
Correct answer: C. {1}
Equality relates each number only to itself, so the class of 1 is just {1}.
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