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1.Set Theory
easy
Taking the set of natural numbers as the universal set, write down the complements of the following sets:
$\{ x:x$ is a natural number divisible by $ 3 $ and $5\} $
Option A
Option B
Option C
Option D
Solution
$U = N$ set of natural numbers
$\{ x:x$ is a natural number divisible by $ 3 $ and $5{\} ^\prime } = \{ x:x$ is a natural number that is not divisible divisible by $3$ or $5\} $
Standard 11
Mathematics
