Write the following intervals in set-builder form :
$\left[ { - 23,5} \right)$
$\left[ { – 23,5} \right) = \{ x:x \in R, – 23\, \le \,x\, < 5\} $
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 $B$)
Examine whether the following statements are true or false :
$\{ x:x$ is an even natural number less than $6\} \subset \{ x:x$ is a natural mumber which divide $36\} $
Let $A=\{1,2,\{3,4\}, 5\} .$ Which of the following statements are incorrect and why ?
$\{ 3,4\} \in A$
Which of the following are examples of the null set
Set of odd natural numbers divisible by $2$
