यदि \(A=\{1,2,3,4\}\) और \(R=\{(a,b)\in A\times A:a+b=5\}\) है, तो (R) में अवयवों की संख्या क्या है?
If \(A=\{1,2,3,4\}\) and \(R=\{(a,b)\in A\times A:a+b=5\}\), then how many elements are in (R)?
Explanation opens after your attempt
Correct Answer
C. (4)
Concept
\(R=\{(1,4),(2,3),(3,2),(4,1)\}\), so the count is (4). In exams, remember that order matters in ordered pairs.
Why this answer is correct
The correct answer is C. (4). \(R=\{(1,4),(2,3),(3,2),(4,1)\}\), so the count is (4). In exams, remember that order matters in ordered pairs.
Exam Tip
\(R=\{(1,4),(2,3),(3,2),(4,1)\}\), इसलिए संख्या (4) है। परीक्षा में क्रमित युग्मों में क्रम का ध्यान रखें।
Login to save your score, XP, coins and progress.