समुच्चय \(A=\{1,2,3,4\}\) पर \(R=\{(a,b):a\leq b\}\) में कितने ordered pairs होंगे?
On \(A=\{1,2,3,4\}\), how many ordered pairs are in \(R=\{(a,b):a\leq b\}\)?
Explanation opens after your attempt
C. (10)
Concept
For \(a\leq b\), the number of pairs is (4+3+2+1=10). In exams, include diagonal pairs ( (a,a) ) also.
Why this answer is correct
The correct answer is C. (10). For \(a\leq b\), the number of pairs is (4+3+2+1=10). In exams, include diagonal pairs ( (a,a) ) also.
Exam Tip
\(a\leq b\) के लिए pairs की संख्या (4+3+2+1=10) है। परीक्षा में diagonal pairs ( (a,a) ) को भी शामिल करें।
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