यदि \(A=\{1,2,3,4,5\}\) और \(B=\{1,2,3,4,5\}\) हैं, तो \(A\times B\) में कितने युग्म ((a,b)) ऐसे हैं जिनमें (a+b=6) और (a<b) दोनों हैं?
If \(A=\{1,2,3,4,5\}\) and \(B=\{1,2,3,4,5\}\), how many pairs ((a,b)) in \(A\times B\) satisfy both (a+b=6) and (a<b)?
Explanation opens after your attempt
A. (2)
Concept
Among pairs with sum (6), only ((1,5)) and ((2,4)) have (a<b). Apply combined conditions one by one.
Why this answer is correct
The correct answer is A. (2). Among pairs with sum (6), only ((1,5)) and ((2,4)) have (a<b). Apply combined conditions one by one.
Exam Tip
योग (6) वाले युग्मों में (a<b) के लिए ((1,5)) और ((2,4)) ही मिलते हैं। संयुक्त शर्तों को एक-एक करके लगाएँ।
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