यदि \(A=\{1,2,3\}\) और \(B=\{2,3,4\}\) हैं, तो \((4,1)\in A\times B\) क्यों असत्य है?
If \(A=\{1,2,3\}\) and \(B=\{2,3,4\}\), why is \((4,1)\in A\times B\) false?
Explanation opens after your attempt
Correct Answer
A. क्योंकि \(4\notin A\) और \(1\notin B\)because \(4\notin A\) and \(1\notin B\)
Concept
In \(A\times B\), the first entry must be from (A) and the second from (B). Here both positions are wrong.
Why this answer is correct
The correct answer is A. क्योंकि \(4\notin A\) और \(1\notin B\) / because \(4\notin A\) and \(1\notin B\). In \(A\times B\), the first entry must be from (A) and the second from (B). Here both positions are wrong.
Exam Tip
\(A\times B\) में पहले स्थान पर (A) का अवयव होना चाहिए और दूसरे स्थान पर (B) का। यहां दोनों स्थान गलत हैं।
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