Question: Consider the set of students in a class. Which of the following relationships are equivalence relations? Explain each answer in at least a sentence. (a)

Consider the set of students in a class. Which of the following relationships are equivalence relations? Explain each answer in at least a sentence.
(a) Two students x, y are related if x has taken at least as many math classes as y.
(b) Students x, y are related if they have names that start with the same letter.

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