\(यदि (A={1,2,3,4}), (B={1,2,3,4}) और (S={(a,b):a+b\) is even\(}) है, तो (S) के पूरक में (A\times B) के सापेक्ष कितने युग्म होंगे\)?
\(If (A={1,2,3,4}), (B={1,2,3,4}), and (S={(a,b):a+b\) is even\(}), how many pairs are in the complement of (S) relative to (A\times B)\)?
Explanation opens after your attempt
Correct Answer
B. (8)
Concept
The complement contains pairs with odd sum, and the count is \(2\cdot2+2\cdot2=8\). For complements, write the opposite condition.
Why this answer is correct
The correct answer is B. (8). The complement contains pairs with odd sum, and the count is \(2\cdot2+2\cdot2=8\). For complements, write the opposite condition.
Exam Tip
पूरक में विषम योग वाले युग्म होंगे और उनकी संख्या \(2\cdot2+2\cdot2=8\) है। पूरक गिनती में विपरीत शर्त लिखें।
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