\(A=\{1,2,3,4\}\) पर \(R=\{(a,b):a+2b=6\}\) में कितने युग्म हैं?

How many pairs are in \(R=\{(a,b):a+2b=6\}\) on \(A=\{1,2,3,4\}\)?

Explanation opens after your attempt
Correct Answer

B. (2) युग्म(2) pairs

Step 1

Concept

For (b=1), (a=4); for (b=2), (a=2). Thus ((4,1)) and ((2,2)) are the two pairs.

Step 2

Why this answer is correct

The correct answer is B. (2) युग्म / (2) pairs. For (b=1), (a=4); for (b=2), (a=2). Thus ((4,1)) and ((2,2)) are the two pairs.

Step 3

Exam Tip

(b=1) पर (a=4) और (b=2) पर (a=2) मिलता है। इसलिए ((4,1)) और ((2,2)) दो युग्म हैं।

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Mathematics Answer, Explanation and Revision Hints

\(A=\{1,2,3,4\}\) पर \(R=\{(a,b):a+2b=6\}\) में कितने युग्म हैं? / How many pairs are in \(R=\{(a,b):a+2b=6\}\) on \(A=\{1,2,3,4\}\)?

Correct Answer: B. (2) युग्म / (2) pairs. Explanation: (b=1) पर (a=4) और (b=2) पर (a=2) मिलता है। इसलिए ((4,1)) और ((2,2)) दो युग्म हैं। / For (b=1), (a=4); for (b=2), (a=2). Thus ((4,1)) and ((2,2)) are the two pairs.

Which concept should I revise for this Mathematics MCQ?

For (b=1), (a=4); for (b=2), (a=2). Thus ((4,1)) and ((2,2)) are the two pairs.

What exam hint can help solve this Mathematics question?

(b=1) पर (a=4) और (b=2) पर (a=2) मिलता है। इसलिए ((4,1)) और ((2,2)) दो युग्म हैं।