समुच्चय \(A=\{1,2,3,4,5,6\}\) पर (R) के वर्ग ({1,2,3},{4,5,6}) और (S) के वर्ग ({1,4},{2,5},{3,6}) हैं। \(R\cap S\) में कितने वर्ग होंगे?
On \(A=\{1,2,3,4,5,6\}\), (R) has classes ({1,2,3},{4,5,6}), and (S) has classes ({1,4},{2,5},{3,6}). How many classes are in \(R\cap S\)?
Explanation opens after your attempt
A. (6)
Concept
दोनों विभाजनों के वर्गों को काटकर देखें। / Intersect the blocks of the two partitions.
Why this answer is correct
हर प्रतिच्छेद एक-एक तत्व देता है: ({1},{2},{3},{4},{5},{6})। / Each non-empty intersection is a singleton: ({1},{2},{3},{4},{5},{6}).
Exam Tip
इसलिए \(R\cap S\) पहचान संबंध जैसा होगा और (6) वर्ग होंगे। / Thus \(R\cap S\) has (6) classes, like the identity relation.
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