यदि \(A=\{1,3\}\) और \(B=\{2,6\}\) हैं, तो \(A\times B\) में दोनों घटकों का गुणनफल सम होने वाले कितने युग्म हैं?
If \(A=\{1,3\}\) and \(B=\{2,6\}\), how many pairs in \(A\times B\) have an even product of components?
Explanation opens after your attempt
C. (4)
Concept
The second component is always even, so every product is even. There are \(2\times 2=4\) pairs in total.
Why this answer is correct
The correct answer is C. (4). The second component is always even, so every product is even. There are \(2\times 2=4\) pairs in total.
Exam Tip
दूसरा घटक हमेशा सम है, इसलिए हर गुणनफल सम होगा। कुल \(2\times 2=4\) युग्म हैं।
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