The Venn diagram shows a universal set, $$\(\mathscr{E}\)$$, and sets $$\(A, B\)$$ and $$\(C\)$$. $$\(7,3,8,1,4\)$$ and 9 represent the numbers of elements. Find (i) $$\(\mathrm{n}(A \cup B)\)$$ (ii) $$\(\mathrm{n}\left(A^{\prime} \cap C\right)\)$$ (iii) $$\(\mathrm{n}\left(A^{\prime} \cup B^{\prime}\right)\)$$

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