तीन समुच्चयों में केवल (A=27), केवल \(A\cap B=10\), केवल \(C\cap A=12\) और \(A\cap B\cap C=8\) हैं। (n(A)) कितना होगा?
In three sets, only (A=27), only \(A\cap B=10\), only \(C\cap A=12\), and \(A\cap B\cap C=8\). What is (n(A))?
Explanation opens after your attempt
B. (57)
Concept
Add all regions inside (A), (27+10+12+8=57). The total of a set is the sum of all its inside regions.
Why this answer is correct
The correct answer is B. (57). Add all regions inside (A), (27+10+12+8=57). The total of a set is the sum of all its inside regions.
Exam Tip
(A) के अंदर आने वाले सभी क्षेत्र जोड़ें, (27+10+12+8=57)। किसी समुच्चय की कुल संख्या उसके सभी अंदरूनी भागों का योग है।
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