Question

Write the relation R = { ( x, 2x-1) : x is a prime number less than 30 }

Answer 1

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Answer 2

R = {(x , 2x-1)}

so ,

R = { (2,3) , (3,5) , (5,9) , (7,13) , (11,21) , (13,25) , (17,33) , (19,37)}