\({}^{n}C_0+{}^{n}C_3+{}^{n}C_6+\cdots\) जैसे sums को अलग करने के लिए कौन-सा advanced method उपयोगी है?
Which advanced method is useful for separating sums like \({}^{n}C_0+{}^{n}C_3+{}^{n}C_6+\cdots\)?
Explanation opens after your attempt
Correct Answer
A. Roots of unity filter
Concept
The roots of unity filter separates indices modulo (3). In exams recognize that such sums differ from the usual even-odd method.
Why this answer is correct
The correct answer is A. Roots of unity filter. The roots of unity filter separates indices modulo (3). In exams recognize that such sums differ from the usual even-odd method.
Exam Tip
Indices modulo (3) अलग करने के लिए unity roots filter प्रयोग किया जाता है। परीक्षा में ऐसी sums को सामान्य even-odd method से अलग पहचानें।
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