\(यदि (U={1,2,\ldots,25}), (A={x:x \in U\) तथा x अभाज्य नहीं है}), तो (A') क्या है?
\(If (U={1,2,\ldots,25}), (A={x:x \in U\) and x is not prime}), what is (A')?
Explanation opens after your attempt
A. ({2,3,5,7,11,13,17,19,23})
Simple Explanation
यदि (A) में अभाज्य नहीं संख्याएं हैं, तो (A') में अभाज्य संख्याएं होंगी। (1) अभाज्य नहीं है। / If (A) contains non-prime numbers, then (A') contains prime numbers. Remember that (1) is not prime.
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