समुच्चय \(A=\{1,2,3,4\}\) पर संबंध \(R=\{(a,b):a<b\}\) में कितने ordered pairs होंगे?
On the set \(A=\{1,2,3,4\}\), how many ordered pairs are in the relation \(R=\{(a,b):a<b\}\)?
Explanation opens after your attempt
C. (6)
Concept
The possible pairs are ( (1,2),(1,3),(1,4),(2,3),(2,4),(3,4) ), so the count is (6). In exams, list pairs systematically.
Why this answer is correct
The correct answer is C. (6). The possible pairs are ( (1,2),(1,3),(1,4),(2,3),(2,4),(3,4) ), so the count is (6). In exams, list pairs systematically.
Exam Tip
संभव युग्म ( (1,2),(1,3),(1,4),(2,3),(2,4),(3,4) ) हैं, इसलिए संख्या (6) है। परीक्षा में क्रमबद्ध तरीके से युग्म लिखें।
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