यदि (n(A-B)=27), (n(B-C)=31), (n(C-A)=24) और तीनों समुच्चय स्वतंत्र रूप से खींचे गए हैं, तो केवल इनसे (n\(A\cup B\cup C\)) क्यों निश्चित नहीं होता?
If (n(A-B)=27), (n(B-C)=31), (n(C-A)=24) and the three sets are drawn generally, why is (n\(A\cup B\cup C\)) not determined from these alone?
Explanation opens after your attempt
A. क्योंकि कई अंदरूनी क्षेत्र अभी अज्ञात हैंBecause several inner regions are still unknown
Concept
In a three-set Venn diagram, these differences describe only some regions, not all seven inner regions. To know the union, all inner regions are needed.
Why this answer is correct
The correct answer is A. क्योंकि कई अंदरूनी क्षेत्र अभी अज्ञात हैं / Because several inner regions are still unknown. In a three-set Venn diagram, these differences describe only some regions, not all seven inner regions. To know the union, all inner regions are needed.
Exam Tip
तीन-समुच्चय वेन आरेख में केवल ये अंतर कुछ क्षेत्रों को ही बताते हैं, सभी सात अंदरूनी क्षेत्र नहीं। संघ जानने के लिए सभी अंदरूनी क्षेत्र चाहिए।
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