यदि \(A=\{0,1,2,3\}\) और \(B=\{1,2,3\}\) हैं, तो \(A\times B\) में कितने युग्म ((x,y)) ऐसे हैं कि (x+y=4)?
If \(A=\{0,1,2,3\}\) and \(B=\{1,2,3\}\), how many pairs ((x,y)) in \(A\times B\) satisfy (x+y=4)?
Explanation opens after your attempt
A. (3)
Concept
The valid pairs are ((1,3),(2,2),(3,1)). The positions in an ordered pair remain fixed.
Why this answer is correct
The correct answer is A. (3). The valid pairs are ((1,3),(2,2),(3,1)). The positions in an ordered pair remain fixed.
Exam Tip
सही युग्म ((1,3),(2,2),(3,1)) हैं। क्रमित युग्म में स्थान निश्चित रहते हैं।
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