turkey-yks 2020 Q9

turkey-yks · Other · yks-ayt Probability Definitions Set Operations
If the number of elements of a set whose all elements are positive integers is one more than the value of the smallest element of this set, this set is called a wide set.
Let $A$, $B$, and $C$ be wide sets,
  • $A \cup B \cup C = \{ 1,2,3,4,5,6,7,8,9 \}$
  • $A \cap B = \{ 3 \}$
  • $1 \in A$
  • $6 \in B$
it is known that. Accordingly, which of the following is set $C$?
A) $\{ 1,2 \}$
B) $\{ 3,4,8,9 \}$
C) $\{ 3,5,7,8 \}$
D) $\{ 4,5,6,7,8 \}$
E) $\{ 4,5,7,8,9 \}$
If the number of elements of a set whose all elements are positive integers is one more than the value of the smallest element of this set, this set is called a wide set.

Let $A$, $B$, and $C$ be wide sets,
\begin{itemize}
  \item $A \cup B \cup C = \{ 1,2,3,4,5,6,7,8,9 \}$
  \item $A \cap B = \{ 3 \}$
  \item $1 \in A$
  \item $6 \in B$
\end{itemize}
it is known that. Accordingly, which of the following is set $C$?\\
A) $\{ 1,2 \}$\\
B) $\{ 3,4,8,9 \}$\\
C) $\{ 3,5,7,8 \}$\\
D) $\{ 4,5,6,7,8 \}$\\
E) $\{ 4,5,7,8,9 \}$