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

On \(A=\{1,2,3,4\}\), how many pairs are in \(R=\{(a,b):|a-b|=1\}\)?

Explanation opens after your attempt
Correct Answer

D. (6)

Step 1

Concept

The pairs are ((1,2),(2,1),(2,3),(3,2),(3,4),(4,3)). With absolute value, both directions are included.

Step 2

Why this answer is correct

The correct answer is D. (6). The pairs are ((1,2),(2,1),(2,3),(3,2),(3,4),(4,3)). With absolute value, both directions are included.

Step 3

Exam Tip

युग्म हैं ((1,2),(2,1),(2,3),(3,2),(3,4),(4,3))। निरपेक्ष मान में दोनों दिशाएं आती हैं।

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Mathematics Answer, Explanation and Revision Hints

समुच्चय \(A=\{1,2,3,4\}\) पर \(R=\{(a,b):|a-b|=1\}\) में कितने युग्म हैं? / On \(A=\{1,2,3,4\}\), how many pairs are in \(R=\{(a,b):|a-b|=1\}\)?

Correct Answer: D. (6). Explanation: युग्म हैं ((1,2),(2,1),(2,3),(3,2),(3,4),(4,3))। निरपेक्ष मान में दोनों दिशाएं आती हैं। / The pairs are ((1,2),(2,1),(2,3),(3,2),(3,4),(4,3)). With absolute value, both directions are included.

Which concept should I revise for this Mathematics MCQ?

The pairs are ((1,2),(2,1),(2,3),(3,2),(3,4),(4,3)). With absolute value, both directions are included.

What exam hint can help solve this Mathematics question?

युग्म हैं ((1,2),(2,1),(2,3),(3,2),(3,4),(4,3))। निरपेक्ष मान में दोनों दिशाएं आती हैं।