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Question
If A = {3, 5, 7} and B = {2, 4, 9} and R is a relation given by "is less than", write R as a set ordered pairs.
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Solution
Since, R={ (x, y) : x, y ∈ N and x<y }
R = { (3, 4), (3, 9), (5, 9), (7,9) }
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