Let $A$ and $B$ be two sets then $(A \cup B)' \cup (A' \cap B)$ is equal to
$A'$
$A$
$B'$
None of these
If $A$ and $B$ are two given sets, then $A \cap {(A \cap B)^c}$ is equal to
Fill in the blanks to make each of the following a true statement :
$A \cup A^{\prime}=\ldots$
Let $U=\{1,2,3,4,5,6,7,8,9\}, A=\{1,2,3,4\}, B=\{2,4,6,8\}$ and $C=\{3,4,5,6\} .$ Find
$A^{\prime}$
Taking the set of natural numbers as the universal set, write down the complements of the following sets:
$\{x: x+5=8\}$
If $U=\{a, b, c, d, e, f, g, h\},$ find the complements of the following sets:
$C=\{a, c, e, g\}$