If $f: R \to R$,then the range of the function $f(x) = \frac{x^2}{x^2 + 1}$ is

Domain and range of $f(x) = \frac{|x - 3|}{x - 3}$ are respectively

If $U = \{2, 3, 4, 5, 6, 7, 8, 9, 10, 11\}$,$A = \{2, 4, 7\}$,$B = \{3, 5, 7, 9, 11\}$,and $C = \{7, 8, 9, 10, 11\}$,compute: $(A \cap U) \cap (B \cup C)$.

If $A$ and $B$ are two sets,then $A \times B = B \times A$ if and only if

Out of $100$ families in the neighbourhood,$50$ have radios,$75$ have $TVs$ and $25$ have $VCRs$. Only $10$ families have all three and each $VCR$ owner also has a $TV$. If some families have radio only,how many have only $TV$?

If $A = \{x, y\}$,then the power set of $A$ is