यदि \(A=\{1,3,5\}\) और \(B=\{2,4,6,8\}\) है, तो \(A\times B\) में ऐसे कितने युग्म ((x,y)) हैं जिनके लिए (x+y>9) है?
If \(A=\{1,3,5\}\) and \(B=\{2,4,6,8\}\), how many pairs ((x,y)) in \(A\times B\) satisfy (x+y>9)?
Explanation opens after your attempt
B. (3)
Concept
With (x=3), only (8) works, and with (x=5), (6,8) work. So there are (1+2=3) pairs.
Why this answer is correct
The correct answer is B. (3). With (x=3), only (8) works, and with (x=5), (6,8) work. So there are (1+2=3) pairs.
Exam Tip
(x=3) के साथ केवल (8) और (x=5) के साथ (6,8) सही हैं। इसलिए कुल (1+2=3) युग्म हैं।
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