State which of the following sets are finite or infinite :

$\{ x:x \in N$ and $x$ is odd $\} $

Let $A=\{1,2,3,4,5,6\} .$ Insert the appropriate symbol $\in$ or $\notin$ in the blank spaces:

$ 8\, .......\, A $

For an integer $n$ let $S_n=\{n+1, n+2, \ldots \ldots, n+18\}$. Which of the following is true for all $n \geq 10$ ?

Examine whether the following statements are true or false :

$\{ a,b\}  \not\subset \{ b,c,a\} $

In the following state whether $\mathrm{A = B}$ or not :

$A = \{ 2,4,6,8,10\} ;B = \{ x:x$ is positiveeven integer and $x\, \le \,10\} $

The number of elements in the set $\{x \in R :(|x|-3)|x+4|=6\}$ is equal to