The sum 1 . 20 C 1 –2 . 20 C 2 + 3 . 20 C 3 – .....– 20 C 20 is equal to

Mathematics · JEE Advanced · NTA Exams — Binomial Theorem And Its Simple Applications

1. 2¹⁹
2. 0
3. 2²⁰ – 1
4. none of these

Answer

(B) 0

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