Which of the following would form an equivalent relation? Given the set of people in the world, we say two people are related (mathematically) if they were born in the same month. We say two functions are related if they have the same derivative. On in the integers, we say say two numbers are related if they have a difference of 10, Ex) 25-15-10 so the are related. Assume our space is partitioned, we say x and y are related if they belong to the same partition.

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