(a)[1]
Express the shaded part of the Venn diagram in set notation.
(b)[2]
$\mathcal{E}=\{x:x\text{ is a positive number}\}$, $A=\{x:9 \le x \le 10\}$, $B=\{x:x\text{ is an irrational number}\}$. Give one element of $A\cap B$.
Mathematics 4024 · O Level · Sets