Write the relation R =

Question:

Write the relation R = {(xx3) : x is a prime number less than 10} in roster form.

Solution:

R = {(xx3) : x is a prime number less than 10}

= 2, 3, 5, 7

x3 = 8, 27, 125, 343

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

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