यदि केवल (A=25), केवल \(A\cap B=14\), केवल \(A\cap C=12\) और \(A\cap B\cap C=9\) हैं, तो (n(A)) कितना होगा?
If only (A=25), only \(A\cap B=14\), only \(A\cap C=12\), and \(A\cap B\cap C=9\), what is (n(A))?
Explanation opens after your attempt
B. (60)
Concept
The sum of all inside parts of (A) is (25+14+12+9=60). The total of a set is found from all regions inside its circle.
Why this answer is correct
The correct answer is B. (60). The sum of all inside parts of (A) is (25+14+12+9=60). The total of a set is found from all regions inside its circle.
Exam Tip
(A) के सभी अंदरूनी भागों का योग (25+14+12+9=60) है। किसी समुच्चय की कुल संख्या उसके वृत्त के सभी भागों से मिलती है।
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