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
Correct Answer

C. ( (2,4) )

Step 1

Concept

Since \(4=2\cdot2\), \((2,4)\in R\). In multiplication rules, check the second component carefully.

Step 2

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.

Step 3

Exam Tip

\(4=2\cdot2\), इसलिए \((2,4)\in R\) है। गुणा वाले rule में second component ध्यान से देखें।

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Mathematics Answer, Explanation and Revision Hints

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)?

Correct Answer: C. ( (2,4) ). Explanation: \(4=2\cdot2\), इसलिए \((2,4)\in R\) है। गुणा वाले rule में second component ध्यान से देखें। / Since \(4=2\cdot2\), \((2,4)\in R\). In multiplication rules, check the second component carefully.

Which concept should I revise for this Mathematics MCQ?

Since \(4=2\cdot2\), \((2,4)\in R\). In multiplication rules, check the second component carefully.

What exam hint can help solve this Mathematics question?

\(4=2\cdot2\), इसलिए \((2,4)\in R\) है। गुणा वाले rule में second component ध्यान से देखें।