Decide whether $\subset$ ,$\subseteq$ , both, or neither can be placed in the blank to make a true statement.
-$\{ 9,10,11 \}$ _ $\{ 8,9,10,11 \}$
A) $\subseteq$
B) Neither
C) Both $\subset$ and $\subseteq$
D) $\subset$

Question

Quizplus · Accepted Answer

The set $\{ 9,10,11 \}$ is a subset of $\{ 8,9,10,11 \}$ because all elements of the first set are contained in the second set. Therefore, both $\subset$ and $\subseteq$ can be used.

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