Set $A$ has $m$ elements and Set $B$ has $n$ elements. If the total number of subsets of $A$ is $112$ more than the total number of subsets of $B$, then the value of $m \times n$ is

List all the elements of the following sers :

$A = \{ x:x$ is an odd natural number $\} $

The number of proper subsets of the set $\{1, 2, 3\}$ is

State which of the following sets are finite or infinite :

$\{ x:x \in N$ and $2x - 1 = 0\} $

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

$A = \{ x:x$ is a multiple of $10\} ;B = \{ 10,15,20,25,30 \ldots  \ldots \} $

Let $A=\{1,2,\{3,4\}, 5\} .$ Which of the following statements are incorrect and why ?

$\{1,2,5\}\subset A$