\(यदि (A={1,2,3,4}) और (R={(a,b):a+b\) संख्या 3 से विभाज्य है}) है, तो (R) में कितने क्रमित युग्म होंगे?
\(If (A={1,2,3,4}) and (R={(a,b):a+b\) is divisible by 3}), how many ordered pairs are in (R)?
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Correct Answer
B. (5) युग्म(5) pairs
Concept
By checking values, we get ((1,2),(2,1),(2,4),(3,3),(4,2)). In such questions, check possible (b) values for each (a) systematically.
Why this answer is correct
The correct answer is B. (5) युग्म / (5) pairs. By checking values, we get ((1,2),(2,1),(2,4),(3,3),(4,2)). In such questions, check possible (b) values for each (a) systematically.
Exam Tip
मान रखने पर ((1,2),(2,1),(2,4),(3,3),(4,2)) मिलते हैं। ऐसे प्रश्न में हर (a) के लिए संभावित (b) व्यवस्थित रूप से जांचें।
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