Find sets $A, B$ and $C$ such that $A \cap B, B \cap C$ and $A \cap C$ are non-empty sets and $A \cap B \cap C=\varnothing$
Let $A=\{0,1\}, B=\{1,2\},$ and $C=\{2,0\}$
Accordingly, $A \cap B=\{1\}, B \cap C=\{2\},$ and $A \cap C=\{0\}$
$\therefore A \cap B, B \cap C,$ and $A \cap C$ are non-empty.
Howerer, $A \cap B \cap C=\varnothing$
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
$B-D$
If $X = \{ {4^n} - 3n - 1:n \in N\} $ and $Y = \{ 9(n - 1):n \in N\} ,$ then $X \cup Y$ = . . . . .
If $A=\{3,5,7,9,11\}, B=\{7,9,11,13\}, C=\{11,13,15\}$ and $D=\{15,17\} ;$ find
$B \cap C$
If $A=\{1,2,3,4\}, B=\{3,4,5,6\}, C=\{5,6,7,8\}$ and $D=\{7,8,9,10\} ;$ find
$B \cup C \cup D$
Find the union of each of the following pairs of sets :
$A=\{1,2,3\}, B=\varnothing$