Let $C = \{x : x \text{ is an even prime number greater than } 2\}$. Then $C$ is:
Aan infinite set
Ba singleton set
Cthe empty set
Dequal to $\{2\}$
Answer & Solution
Correct answer: C. the empty set
The only even prime is $2$, but the set excludes $2$ itself (*greater than 2*). So no element qualifies → $C = \phi$.
This is NCERT Class 11 §1.3 example.
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