यदि \(A=\{1,2,4,8\}\) और \(B=\{2,4,8,16\}\) है, तो \(A\times B\) में ऐसे कितने युग्म ((x,y)) हैं जिनके लिए (y=2x) है?

If \(A=\{1,2,4,8\}\) and \(B=\{2,4,8,16\}\), how many pairs ((x,y)) in \(A\times B\) satisfy (y=2x)?

Explanation opens after your attempt
Correct Answer

C. (4)

Step 1

Concept

For every \(x\in A\), \(2x\in B\), giving ((1,2),(2,4),(4,8),(8,16)). There are (4) pairs.

Step 2

Why this answer is correct

The correct answer is C. (4). For every \(x\in A\), \(2x\in B\), giving ((1,2),(2,4),(4,8),(8,16)). There are (4) pairs.

Step 3

Exam Tip

हर \(x\in A\) के लिए \(2x\in B\), इसलिए ((1,2),(2,4),(4,8),(8,16)) मिलते हैं। कुल (4) युग्म हैं।

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यदि \(A=\{1,2,4,8\}\) और \(B=\{2,4,8,16\}\) है, तो \(A\times B\) में ऐसे कितने युग्म ((x,y)) हैं जिनके लिए (y=2x) है? / If \(A=\{1,2,4,8\}\) and \(B=\{2,4,8,16\}\), how many pairs ((x,y)) in \(A\times B\) satisfy (y=2x)?

Correct Answer: C. (4). Explanation: हर \(x\in A\) के लिए \(2x\in B\), इसलिए ((1,2),(2,4),(4,8),(8,16)) मिलते हैं। कुल (4) युग्म हैं। / For every \(x\in A\), \(2x\in B\), giving ((1,2),(2,4),(4,8),(8,16)). There are (4) pairs.

Which concept should I revise for this Mathematics MCQ?

For every \(x\in A\), \(2x\in B\), giving ((1,2),(2,4),(4,8),(8,16)). There are (4) pairs.

What exam hint can help solve this Mathematics question?

हर \(x\in A\) के लिए \(2x\in B\), इसलिए ((1,2),(2,4),(4,8),(8,16)) मिलते हैं। कुल (4) युग्म हैं।