Question:
If $A=\{2,3,5,7,11\}$ and $B=\phi$, find:
(i) $A \cup B$
(ii) $A \cap B$
Solution:
Given; A = {2, 3, 5, 7, 11} and B = ϕ
(i) $A \cup B=\{2,3,5,7,11\}$
(ii) $A \cap B=\phi$
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