Question3. Suppose $U=$ The set of one digit numbers and $A=\{x: x$ is an even natural number less than or equal to 9$\}$ Describe each of the sets by complete listing method: a. $A^{\prime}$. b. $A \cap A^{\prime}$. c. $A \cup \cup_{1}^{\prime}$. d. $\left(A^{\prime}\right)^{\prime}$. c. $\phi-U$. f. $\phi^{\prime}$ g. $U^{\prime}$.