यदि (n\(A\Delta B\)=54) और (n\(A\cap B\)=19) है, तो (n\(A\cup B\)) क्या होगा?
If (n\(A\Delta B\)=54) and (n\(A\cap B\)=19), what is (n\(A\cup B\))?
Explanation opens after your attempt
A. (73)
Concept
The symmetric difference \(A\Delta B\) gives the exactly-one regions, so the union is (54+19=73). The common region must be added separately.
Why this answer is correct
The correct answer is A. (73). The symmetric difference \(A\Delta B\) gives the exactly-one regions, so the union is (54+19=73). The common region must be added separately.
Exam Tip
सममित अंतर \(A\Delta B\) ठीक एक समुच्चय के क्षेत्र देता है, इसलिए संघ (54+19=73) है। साझा क्षेत्र अलग से जोड़ना होता है।
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