तीन समुच्चयों में (n\(A\cap B\)=36), (n\(B\cap C\)=33), (n\(C\cap A\)=31) और (n\(A\cap B\cap C\)=14) है। ठीक दो समुच्चयों में आने वाले तत्व कितने हैं?
In three sets (n\(A\cap B\)=36), (n\(B\cap C\)=33), (n\(C\cap A\)=31), and (n\(A\cap B\cap C\)=14). How many elements are in exactly two sets?
Explanation opens after your attempt
B. (58)
Concept
Exactly two (=(36-14)+(33-14)+(31-14)=58). Each pairwise intersection includes the central part, so subtract it.
Why this answer is correct
The correct answer is B. (58). Exactly two (=(36-14)+(33-14)+(31-14)=58). Each pairwise intersection includes the central part, so subtract it.
Exam Tip
ठीक दो (=(36-14)+(33-14)+(31-14)=58) है। हर जोड़ी में केंद्रीय भाग शामिल होता है, इसलिए उसे घटाएं।
Login to save your score, XP, coins and progress.
