Taking the set of natural numbers as the universal set, write down the complements of the following sets:
$\{ x:x$ is a positive multiple of $3\} $
Taking the set of natural numbers as the universal set, write down the complements of the following sets:
$\{ x:x$ is a positive multiple of $3\} $
$U = N$ set of natural numbers
$\{ x:x$ is a positive multiple of $3{\} ^\prime } = \{ x:x \in N$ and $x$ is not a multiple of $3\} $
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${{\mathop{\rm U}\nolimits} ^\prime } \cap A = \ldots $
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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
$(A \cup B)^{\prime}$
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$(A \cup B)^{\prime}$