यदि \(A=\{1,2,3,4,5\}\) और \(B=\{1,2,3,4,5,6\}\) हैं, तो \(A\times B\) में कितने युग्म ((a,b)) ऐसे हैं जिनमें (b) (a) का गुणज है?
If \(A=\{1,2,3,4,5\}\) and \(B=\{1,2,3,4,5,6\}\), how many pairs ((a,b)) in \(A\times B\) have (b) as a multiple of (a)?
Explanation opens after your attempt
C. (14)
Concept
For (a=1,2,3,4,5), the counts of (b) are (6,3,2,1,1), totaling (13). Count multiples of each (a) inside (B).
Why this answer is correct
The correct answer is C. (14). For (a=1,2,3,4,5), the counts of (b) are (6,3,2,1,1), totaling (13). Count multiples of each (a) inside (B).
Exam Tip
(a=1,2,3,4,5) के लिए (b) के (6,3,2,1,1) मान हैं, कुल (13)। हर (a) के गुणज (B) में गिनें।
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