यदि \(A=\{1,2,3,4\}\), \(B=\{1,2,3,4\}\) और \(S=\{(x,y)\in A\times B:x+y=5\}\), तो (S) क्या है?
If \(A=\{1,2,3,4\}\), \(B=\{1,2,3,4\}\), and \(S=\{(x,y)\in A\times B:x+y=5\}\), what is (S)?
Explanation opens after your attempt
Correct Answer
A. ( {(1,4),(2,3),(3,2),(4,1)} )
Concept
(x+y=5), and both coordinates must lie from (1) to (4). Thus the four pairs are ((1,4),(2,3),(3,2),(4,1)).
Why this answer is correct
The correct answer is A. ( {(1,4),(2,3),(3,2),(4,1)} ). (x+y=5), and both coordinates must lie from (1) to (4). Thus the four pairs are ((1,4),(2,3),(3,2),(4,1)).
Exam Tip
(x+y=5) और दोनों निर्देशांक (1) से (4) में होने चाहिए। इसलिए चार युग्म ((1,4),(2,3),(3,2),(4,1)) मिलते हैं।
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