यदि (n(B)=66) और (n\(A\cap B\)=31) है, तो केवल (B) वाला क्षेत्र कितना होगा?
If (n(B)=66) and (n\(A\cap B\)=31), what is the only (B) region?
Explanation opens after your attempt
B. (35)
Concept
For only (B), (66-31=35). In a Venn diagram, writing the middle part first is helpful.
Why this answer is correct
The correct answer is B. (35). For only (B), (66-31=35). In a Venn diagram, writing the middle part first is helpful.
Exam Tip
केवल (B) के लिए (66-31=35) होगा। वेन आरेख में मध्य भाग पहले लिखना आसान रहता है।
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