यदि \(A\triangle B\) को (\(A\setminus B\)\cup\(B\setminus A\)) से परिभाषित किया जाए और (n\(A\cup B\)=40), (n\(A\cap B\)=13) हो, तो (n\(A\triangle B\)) कितना है?
If \(A\triangle B\) is defined as (\(A\setminus B\)\cup\(B\setminus A\)) and (n\(A\cup B\)=40), (n\(A\cap B\)=13), then what is (n\(A\triangle B\))?
Explanation opens after your attempt
A. (27)
Concept
\(A\triangle B\) removes the common part from the union. Therefore (n\(A\triangle B\)=40-13=27).
Why this answer is correct
The correct answer is A. (27). \(A\triangle B\) removes the common part from the union. Therefore (n\(A\triangle B\)=40-13=27).
Exam Tip
\(A\triangle B\) संघ में से साझा भाग हटाता है। इसलिए (n\(A\triangle B\)=40-13=27)।
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