List all the elements of the following sers :
$A = \{ x:x$ is an odd natural number $\} $
Assume that $P(A)=P(B) .$ Show that $A=B$.
Which of the following are sets ? Justify your answer.
A collection of most dangerous animals of the world.
Make correct statements by filling in the symbols $\subset$ or $ \not\subset $ in the blank spaces:
$\{ x:x$ is a student of class $\mathrm{XI}$ of your school $\} \ldots \{ x:x$ student of your school $\} $
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\} $