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