समुच्चय \(A=\{1,2,3,4\}\) पर \(R=\{(a,b):|a-b|=1\}\) में कितने ordered pairs हैं?
On \(A=\{1,2,3,4\}\), how many ordered pairs are in \(R=\{(a,b):|a-b|=1\}\)?
Explanation opens after your attempt
Correct Answer
C. (6)
Concept
The pairs are ( (1,2),(2,1),(2,3),(3,2),(3,4),(4,3) ), so the count is (6). In exams, take both directions because of absolute difference.
Why this answer is correct
The correct answer is C. (6). The pairs are ( (1,2),(2,1),(2,3),(3,2),(3,4),(4,3) ), so the count is (6). In exams, take both directions because of absolute difference.
Exam Tip
युग्म ( (1,2),(2,1),(2,3),(3,2),(3,4),(4,3) ) हैं, इसलिए संख्या (6) है। परीक्षा में absolute difference के कारण दोनों दिशाएं लें।
Login to save your score, XP, coins and progress.