Question:
Write the relation R = {(x, x3) : x is a prime number less than 10} in roster form.
Solution:
R = {(x, x3) : x is a prime number less than 10}
x = 2, 3, 5, 7
x3 = 8, 27, 125, 343
R = {(2, 8), (3, 27), (5, 125), (7, 343)}
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