Decide whether $\subset$ ,$\subseteq$ , both, or neither can be placed in the blank to make a true statement.
-$\{ s , r , t \} \ldots \{ s , r , t \}$
A) Both $\subseteq$ and $\subset$
B) $\subset$
C) $\subseteq$
D) Neither

Question

Quizplus · Accepted Answer

The symbol $\subseteq$ means "is a subset of or equal to," which applies here since a set is always a subset of itself. The symbol $\subset$ means "is a proper subset of," which does not apply because a set is not a proper subset of itself.

Decide Whether ⊂\subset⊂ ⊆\subseteq⊆ , Both, or Neither Can Be Placed in the Blank

Decide Whether $\subset$ $\subseteq$ , Both, or Neither Can Be Placed in the Blank