\(यदि (U={1,2,\ldots,25}), (A={x:x \in U\) 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})
Concept
If (A) contains non-prime numbers, then (A') contains prime numbers. Remember that (1) is not prime.
Why this answer is correct
The correct answer is A. ({2,3,5,7,11,13,17,19,23}). If (A) contains non-prime numbers, then (A') contains prime numbers. Remember that (1) is not prime.
Exam Tip
यदि (A) में अभाज्य नहीं संख्याएं हैं, तो (A') में अभाज्य संख्याएं होंगी। (1) अभाज्य नहीं है।
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