Question: Let $R=\left\{\left(a, a^{3}\right): a\right.$ is a prime number less than 10$\}$.
Find (i) R (ii) dom (R) (iii) range (R).
Solution:
(i) $R=\{(2,8),(3,27),(5,125),(7,343)\}$
(ii) $\operatorname{dom}(R)=\{2,3,5,7\}$
(iii) range $(R)=\{8,27,125,343\}$
