यदि \(A=\{1,2,3\}\) और \(B=\{2,4\}\) हैं, तो \(A\times B\) में कितने युग्म ((x,y)) ऐसे हैं कि (x) संख्या (y) से छोटा है?
If \(A=\{1,2,3\}\) and \(B=\{2,4\}\), how many pairs ((x,y)) in \(A\times B\) satisfy (x<y)?
Explanation opens after your attempt
Correct Answer
A. (5)
Concept
The listed valid distinct pairs are ((1,2),(1,4),(2,4),(3,4)), so the count is (4). Avoid counting the same pair twice.
Why this answer is correct
The correct answer is A. (5). The listed valid distinct pairs are ((1,2),(1,4),(2,4),(3,4)), so the count is (4). Avoid counting the same pair twice.
Exam Tip
सही युग्म ((1,2),(1,4),(2,4),(3,4),(2,4)) नहीं दोहराएं; वास्तविक अलग युग्म ((1,2),(1,4),(2,4),(3,4)) और ((2,4)) की पुनरावृत्ति हटाने पर (4) होता है।
Login to save your score, XP, coins and progress.