\(^{16}C_7\) और \(^{16}C_9\) के बराबर होने का कारण क्या है?
What is the reason \(^{16}C_7\) and \(^{16}C_9\) are equal?
Explanation opens after your attempt
A. (7+9=16) इसलिए complementary selection है(7+9=16), so it is complementary selection
Concept
When indices sum to (n), \(^{n}C_r=^{n}C_{n-r}\). In exams checking the sum is the fastest method.
Why this answer is correct
The correct answer is A. (7+9=16) इसलिए complementary selection है / (7+9=16), so it is complementary selection. When indices sum to (n), \(^{n}C_r=^{n}C_{n-r}\). In exams checking the sum is the fastest method.
Exam Tip
Indices का sum (n) होने पर \(^{n}C_r=^{n}C_{n-r}\)। परीक्षा में sum check सबसे तेज तरीका है।
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