Let R be a relation from A= 1, 2, 3, 4 to B= 1, 3, 5 such that R= (a, b) : a<b, where a A and b B . What is R R^ -1 equal to?

NDA 2016 Mathematics question

Let R be a relation from to such that , where and . What is equal to?

Answer: (C)

and . when and $(y,

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Question ID VK-028464