यदि \(A=\{1,2,3,4,5\}\) और \(B=\{1,2,3,4\}\) हैं, तो \(A\times B\) में कितने युग्म ((a,b)) ऐसे हैं जिनमें \(a+b\le6\) है?
If \(A=\{1,2,3,4,5\}\) and \(B=\{1,2,3,4\}\), how many pairs ((a,b)) in \(A\times B\) satisfy \(a+b\le6\)?
Explanation opens after your attempt
B. (14)
Concept
For (a=1,2,3,4,5), the counts of (b) are (4,4,3,2,1), totaling (14). Include equality in a boundary inequality.
Why this answer is correct
The correct answer is B. (14). For (a=1,2,3,4,5), the counts of (b) are (4,4,3,2,1), totaling (14). Include equality in a boundary inequality.
Exam Tip
(a=1,2,3,4,5) के लिए (b) के (4,4,3,2,1) मान हैं, कुल (14)। सीमा सहित असमानता में बराबरी भी गिनें।
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