यदि केवल (A) में (31), केवल (B) में (27), केवल (C) में (25), केवल दो-दो के कुल भाग में (42) और तीनों में (11) हैं, तो (n\(A\cup B\cup C\)) कितना है?
If only (A) has (31), only (B) has (27), only (C) has (25), the total of exactly two-set regions is (42), and all three have (11), then what is (n\(A\cup B\cup C\))?
Explanation opens after your attempt
A. (136)
Concept
The union is the sum of all disjoint regions (31+27+25+42+11=136). Do not add any region twice in a Venn diagram.
Why this answer is correct
The correct answer is A. (136). The union is the sum of all disjoint regions (31+27+25+42+11=136). Do not add any region twice in a Venn diagram.
Exam Tip
संघ सभी अलग क्षेत्रों का योग (31+27+25+42+11=136) है। वेन आरेख में कोई क्षेत्र दो बार न जोड़ें।
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