Make correct statements by filling in the symbols $\subset$ or $ \not\subset $ in the blank spaces:
$\{ x:x$ is a circlein the plane $\} \ldots \{ x:x$ is a circle in thesame plane with radius $1$ unit $\} $
Which of the following is a true statement
Let $A=\{1,2,3,4,5,6\} .$ Insert the appropriate symbol $\in$ or $\notin$ in the blank spaces:
$ 5\, .......\, A$
Which of the following are sets ? Justify your answer.
The collection of all even integers.
Write the following sets in roster form :
$A = \{ x:x$ is an integer and $ - 3 < x < 7\} $