यदि \(A=\{1,2,4,8\}\) और \(R=\{(a,b):b=2a\}\) है, तो (R) में कौन-सा pair होगा?
If \(A=\{1,2,4,8\}\) and \(R=\{(a,b):b=2a\}\), which pair will be in (R)?
Explanation opens after your attempt
C. ( (2,4) )
Concept
Since \(4=2\cdot2\), \((2,4)\in R\). In multiplication rules, check the second component carefully.
Why this answer is correct
The correct answer is C. ( (2,4) ). Since \(4=2\cdot2\), \((2,4)\in R\). In multiplication rules, check the second component carefully.
Exam Tip
\(4=2\cdot2\), इसलिए \((2,4)\in R\) है। गुणा वाले rule में second component ध्यान से देखें।
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