यदि \(A=\{1,2,3,4\}\) पर \(R=\{(a,b):a+b=6\}\) हो तो (R) में कितने युग्म हैं?
If on \(A=\{1,2,3,4\}\), \(R=\{(a,b):a+b=6\}\), how many pairs are in (R)?
Explanation opens after your attempt
Correct Answer
C. (3)
Concept
The valid pairs are ((2,4),(3,3),(4,2)). The pair ((1,5)) is not included because \(5\notin A\).
Why this answer is correct
The correct answer is C. (3). The valid pairs are ((2,4),(3,3),(4,2)). The pair ((1,5)) is not included because \(5\notin A\).
Exam Tip
मान्य युग्म ((2,4),(3,3),(4,2)) हैं। ((1,5)) नहीं आएगा क्योंकि \(5\notin A\)।
Login to save your score, XP, coins and progress.