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Binomial Theorem Part 3

Section: Mathematics

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Question : 12 of 45

Marks: +1, -0

The sum of the series 2×1×‌20C4−3×2×‌20C5+4×3×‌20C6−5×4× ‌20C7+.....+18×17×‌20C20, is equal to ____ .

[7 Apr 2025 Shift 2]

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