यदि \(A=\{1,2,3,4\}\) और \(B=\{1,2,3,4\}\), तो \(A\times B\) में (|a-b|=2) वाले युग्मों की संख्या कितनी है?
If \(A=\{1,2,3,4\}\) and \(B=\{1,2,3,4\}\), how many pairs in \(A\times B\) satisfy (|a-b|=2)?
Explanation opens after your attempt
Correct Answer
C. (4)
Concept
The pairs are ((1,3),(3,1),(2,4),(4,2)). With absolute difference, both orders may be possible.
Why this answer is correct
The correct answer is C. (4). The pairs are ((1,3),(3,1),(2,4),(4,2)). With absolute difference, both orders may be possible.
Exam Tip
युग्म ((1,3),(3,1),(2,4),(4,2)) हैं। निरपेक्ष अंतर में दोनों क्रम संभव हो सकते हैं।
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