State whether following set is empty or not
${E v e n n a t u r a l n u m b e r d i v i s i b l e b y 3}$

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Solution

Empty set -
A set having no element is called empty set.
Here given that a set has ${E v e n n a t u r a l n u m b e r d i v i s i b l e b y 3}$
Since, There is no even natural number which is divisible by $3$ .
Therefore this is an empty set.

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