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Question
Let A = {2, 3, 4, 5} and B = {1, 3, 4}. If R is the relation from A to B given by a R b if "a is a divisor of b". Write R as a set of ordered pairs.
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Solution
Since R = {(a, b) : a, b ∈N : a is a divisor of b}
So, R = {(2, 4), (3, 3), (4, 4)}
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