यदि \(A=\{5,7\}\) और \(B=\{1,2,3\}\) हैं, तो दूसरे घटक (2) वाले \(A\times B\) के युग्म कौन से हैं?
If \(A=\{5,7\}\) and \(B=\{1,2,3\}\), which pairs of \(A\times B\) have second component (2)?
Explanation opens after your attempt
Correct Answer
A. ({(5,2),(7,2)})
Concept
The second component (2) is fixed, and the first component is (5) or (7) from (A). In such pairs, only the first position changes.
Why this answer is correct
The correct answer is A. ({(5,2),(7,2)}). The second component (2) is fixed, and the first component is (5) or (7) from (A). In such pairs, only the first position changes.
Exam Tip
दूसरा घटक (2) स्थिर है और पहला घटक (A) से (5) या (7) होगा। ऐसे युग्मों में पहला स्थान ही बदलता है।
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