If $A, B$ and $C$ are any three sets, then $A -(B \cup C)$ is equal to
$(A -B) \cup (A -C)$
$(A -B) \cap (A -C)$
$(A -B) \cup C$
$(A -B) \cap C$
State whether each of the following statement is true or false. Justify you answer.
$\{2,3,4,5\}$ and $\{3,6\}$ are disjoint sets.
If $A, B$ and $C$ are non-empty sets, then $(A -B) \cup (B -A)$ equals
Find the union of each of the following pairs of sets :
$A=\{a, e, i, o, u\} B=\{a, b, c\}$
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
$B-C$
Let $V =\{a, e, i, o, u\}$ and $B =\{a, i, k, u\} .$ Find $V - B$ and $B - V$