यदि \(A=\{1,2,3,4,5,6\}\) और \(B=\{1,2,3,4,5,6\}\) हैं, तो \(A\times B\) में कितने युग्म ((a,b)) ऐसे हैं जिनमें \(a\ne b\) है?
If \(A=\{1,2,3,4,5,6\}\) and \(B=\{1,2,3,4,5,6\}\), how many pairs ((a,b)) in \(A\times B\) satisfy \(a\ne b\)?
Explanation opens after your attempt
C. (30)
Concept
There are (36) total pairs and (6) equal pairs, so (36-6=30). Complement counting is a quick method.
Why this answer is correct
The correct answer is C. (30). There are (36) total pairs and (6) equal pairs, so (36-6=30). Complement counting is a quick method.
Exam Tip
कुल (36) युग्म हैं और बराबर युग्म (6) हैं, इसलिए (36-6=30)। पूरक गिनती तेज तरीका है।
Login to save your score, XP, coins and progress.
