1 votes 1 votes Determine True or False $a)x\varepsilon \left \{ x \right \}$ $b)\left \{ x \right \}\subseteq \left \{ x \right \}$ $c)\left \{ x \right \}\varepsilon \left \{ x \right \}$ Linear Algebra set-theory&algebra discrete-mathematics + – srestha asked Jul 13, 2018 srestha 218 views answer comment Share Follow See 1 comment See all 1 1 comment reply !KARAN commented Jul 13, 2018 reply Follow Share a) True - $x$ is an element that belong to a set which contains only one element $\{x\}$. b) True - A set is always subset of itself. c) False - It is saying that set $\{x\}$ belong to a set $\{x\}$ which is false. It would be correct if $\{x\} \in \{\{x\}\}$. 3 votes 3 votes Please log in or register to add a comment.