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Let A= {1 2, 3,4] and R be a relation on...

Let `A= {1 2, 3,4]` and R be a relation on the set `A xx A` defined by `R= {((a, b), (c d)) :2a+3b=4c +5d}` . Then the number of elements in `R` is ______

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JEE MAINS PREVIOUS YEAR-JEE MAIN 2023-Question
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