Question

Cardinal number of the set $G=\{x:x\in N,5<x<9\}$ is __.

• A. 3
• B. 4
• C. 5
• D. 2

Answer 1

The correct option is A

3

If $x\in N$ such that $5<x<9,$ then the possible values of $x$ are 6, 7 and 8.
i.e., $G=\{6,7,8\}$
$\Rightarrow n\left(G\right)=3$
Thus, the cardinal number of the set $G$ is 3.