Q17 of 76 Page 2

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

Given,


R = {(x, x3): x is a prime number less than 10}


Prime numbers less than 10 are 2, 3, 5 and 7


∴ R = {(2, 23), (3, 33), (5, 53), (7, 73)}


⇒ R = {(2, 8), (3, 27), (5, 125), (7, 343)}


So,


Domain of relation R = {2, 3, 5, 7}


Range of relation R = {8, 27, 125, 343}


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