Which of the following are sets ? Justify your answer.
The collection of all even integers.
State whether each of the following set is finite or infinite :
The set of animals living on the earth
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 $B$)
Which of the following sets are finite or infinite.
The set of positive integers greater than $100$
In the following state whether $A=B$ or not :
$A=\{4,8,12,16\} ; B=\{8,4,16,18\}$