Write the relation R = (x, x3): x is a prime number less than 10 … - Vidyadip

Question

Write the relation R = {(x, x³): x is a prime number less than 10} in roster form.

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Answer

We have,
R = {(x, x³): x is a prime number less than 10}
For the elements of the given sets, we find that
x = 2, 3, 5, 7
$\therefore\ (2,8)\in\text{R},(3,27)\in\text{R},(5,125)\in\text{R}$ and $(7,343)\in\text{R}$
$\therefore$ Relation R in roster form is = {(2, 8), (3, 27), (5, 125), (7, 343)}

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