Question

Fill in the blanks with $\subseteq$ or $⊈$ to make each statement true.
(i) $\left\{3\right\}----\{0,2,4,6\}$
(ii) $\left\{a\right\}----\{a,b,c\}$
(iii) $\{8,18\}----\{18,8\}$
(iv) $\left\{d\right\}----\{a,b,c\}$

Answer 1

$\left(1\right)\left\{3\right\}⊈\{0,2,4,6\}$

$\left(2\right)\left\{a\right\}\subseteq \{a,b,c\}$

$\left(3\right)\{8,18\}\subseteq \{18,8\}$

$\left(4\right)\left\{d\right\}⊈\{a,b,c\}$