Use $ \subseteq, \nsubseteq, \subset $, or both $ \subset $ and $ \subseteq$ to make a true statement.
-$\{ \mathrm { s } , \mathrm { r } , \mathrm { t } \} ........ \{ \mathrm { s } , \mathrm { r } , \mathrm { t } \}$
A) $ \subseteq $ and $\subset $
B) $\subset$
C) $\nsubseteq$
D) $\subseteq$

Question

Use $ \subseteq, \nsubseteq, \subset $, or both $ \subset $ and $ \subseteq$ to make a true statement.
-$\{ \mathrm { s } , \mathrm { r } , \mathrm { t } \} ........  \{ \mathrm { s } , \mathrm { r } , \mathrm { t } \}$
A) $ \subseteq $ and $\subset $
B) $\subset$
C) $\nsubseteq$
D) $\subseteq$

Quizplus · Accepted Answer

The symbol $ \subseteq $ indicates that the set on the left is a subset of the set on the right, including the possibility of the sets being equal. Since both sets are identical, $ \subseteq $ is the correct choice, indicating that every element in the left set is also in the right set. The $ \subset $ symbol is not used in this context because it implies a proper subset, where the sets are not equal.

Use ⊆,⊈,⊂ \subseteq, \nsubseteq, \subset ⊆,⊈,⊂ , or Both ⊂ \subset ⊂

Use $\subseteq, \nsubseteq, \subset$ , or Both $\subset$