Let $A$ and $B$ be two sets in the universal set. Then $A - B$ equals
$A \cap {B^c}$
${A^c} \cap B$
$A \cap B$
None of these
Find the intersection of each pair of sets :
$X=\{1,3,5\} Y=\{1,2,3\}$
Given the sets $A = \{ 1,\,2,\,3\} ,\,B = \{ 3,4\} , C = \{4, 5, 6\}$, then $A \cup (B \cap C)$ is
If $A, B$ and $C$ are non-empty sets, then $(A -B) \cup (B -A)$ equals
If the sets $A$ and $B$ are defined as $A = \{ (x,\,y):y = {1 \over x},\,0 \ne x \in R\} $ $B = \{ (x,y):y = - x,x \in R\} $, then
If $A=\{3,6,9,12,15,18,21\}, B=\{4,8,12,16,20\},$ $C=\{2,4,6,8,10,12,14,16\}, D=\{5,10,15,20\} ;$ find
$C-B$