\({}^{n+r-1}C_r\) और \({}^{n+r-1}C_{n-1}\) का equality किस identity से आती है?
The equality of \({}^{n+r-1}C_r\) and \({}^{n+r-1}C_{n-1}\) comes from which identity?
Explanation opens after your attempt
Correct Answer
B. Complement identity
Concept
The two lower indices sum to (n+r-1). In exams accept complementary forms in stars and bars answers.
Why this answer is correct
The correct answer is B. Complement identity. The two lower indices sum to (n+r-1). In exams accept complementary forms in stars and bars answers.
Exam Tip
दोनों lower indices का sum (n+r-1) है। परीक्षा में stars and bars answers में complementary forms accept करें।
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