In the following state whether $A=B$ or not :
$A=\{a, b, c, d\} ; B=\{d, c, b, a\}$
The set $A = \{ x:x \in R,\,{x^2} = 16$ and $2x = 6\} $ equals
Write the following as intervals :
$\{ x:x \in R,3\, \le \,x\, \le \,4\} $
What universal set $(s)$ would you propose for each of the following :
The set of right triangles
If $A$ and $B$ are any two non empty sets and $A$ is proper subset of $B$. If $n(A) = 4$, then minimum possible value of $n(A \Delta B)$ is (where $\Delta$ denotes symmetric difference of set $A$ and set $B$)