यदि \(A=\{1,2\}\) है और \(A\times B={(1,a),(1,b),(2,a),(2,b)}\), तो (B) क्या है?
If \(A=\{1,2\}\) and \(A\times B={(1,a),(1,b),(2,a),(2,b)}\), what is (B)?
Explanation opens after your attempt
Correct Answer
B. ({a,b})
Concept
The set of second components is \(B=\{a,b\}\). When identifying original sets, observe the positions.
Why this answer is correct
The correct answer is B. ({a,b}). The set of second components is \(B=\{a,b\}\). When identifying original sets, observe the positions.
Exam Tip
दूसरे अवयवों का समुच्चय \(B=\{a,b\}\) है। कार्तीय गुणनफल से मूल समुच्चय पहचानते समय स्थान देखें।
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