यदि \(A=\{1,2,3\}\) और \(B=\{4,5\}\) हैं, तो \(A\times B\) में (3) को पहले घटक के रूप में लेकर कौन से युग्म होंगे?
If \(A=\{1,2,3\}\) and \(B=\{4,5\}\), which pairs in \(A\times B\) have (3) as the first component?
Explanation opens after your attempt
A. ({(3,4),(3,5)})
Concept
The first component (3) is fixed, and the second component is (4) or (5) from (B). With a fixed first component, only elements of the second set vary.
Why this answer is correct
The correct answer is A. ({(3,4),(3,5)}). The first component (3) is fixed, and the second component is (4) or (5) from (B). With a fixed first component, only elements of the second set vary.
Exam Tip
पहला घटक (3) स्थिर है और दूसरा घटक (B) से (4) या (5) होगा। निश्चित पहले घटक पर केवल दूसरे समुच्चय के तत्व बदलते हैं।
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