यदि \(A=\{2,4,6\}\) और \(B=\{1,2,3,4\}\) है, तो \(A\times B\) में ऐसे कितने युग्म ((x,y)) हैं जिनके लिए (x-y) धनात्मक है?
If \(A=\{2,4,6\}\) and \(B=\{1,2,3,4\}\), how many pairs ((x,y)) in \(A\times B\) satisfy (x-y) is positive?
Explanation opens after your attempt
D. (9)
Concept
For (x=2) there is (1) choice, for (x=4) there are (3), and for (x=6) there are (4). Hence the total is (1+3+4=8), so choose the option (8).
Why this answer is correct
The correct answer is D. (9). For (x=2) there is (1) choice, for (x=4) there are (3), and for (x=6) there are (4). Hence the total is (1+3+4=8), so choose the option (8).
Exam Tip
(x=2) पर (1), (x=4) पर (3), और (x=6) पर (4) विकल्प हैं। कुल (1+3+4=8) नहीं बल्कि (x=6) के लिए चारों (y) सही हैं, अतः कुल (8) है।
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