यदि \(A=\{1,2,3,4\}\) और \(B=\{1,2,3,4,5,6\}\) हैं, तो \(A\times B\) में कितने युग्म ((a,b)) ऐसे हैं जिनमें \(ab\le8\) है?
If \(A=\{1,2,3,4\}\) and \(B=\{1,2,3,4,5,6\}\), how many pairs ((a,b)) in \(A\times B\) satisfy \(ab\le8\)?
Explanation opens after your attempt
Correct Answer
B. (14)
Concept
For (a=1,2,3,4), the counts of (b) are (6,4,2,2), totaling (14). In product conditions, the limit changes for each (a).
Why this answer is correct
The correct answer is B. (14). For (a=1,2,3,4), the counts of (b) are (6,4,2,2), totaling (14). In product conditions, the limit changes for each (a).
Exam Tip
(a=1,2,3,4) के लिए (b) के (6,4,2,2) मान मिलते हैं, कुल (14)। गुणन शर्त में प्रत्येक (a) पर सीमा अलग होती है।
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