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Let R be the relation defined on the set...

Let R be the relation defined on the set N of natural numbers as R =`{(x,y)|4x+5y=50,x,y in N}`.Express R and `R^-1`as set of ordered pairs

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UNITED BOOK HOUSE-ANNUAL EXAMINATION QUESTION PAPERS 2015-EXERCISE
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  3. Let R be the relation defined on the set N of natural numbers as R ={(...

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