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JEE Main 2015

JEE Main 2015 Mathematics question on Binomial Theorem

The sum of coefficients of integral powers of xx in the binomial expansion (1−2x)50(1 - 2\sqrt{x})^{50} is
  1. A.
    12(350+1)\frac{1}{2}(3^{50} + 1)
  2. B.
    12(350)\frac{1}{2}(3^{50})
  3. C.
    12(350−1)\frac{1}{2}(3^{50} - 1)
  4. D.
    12(250+1)\frac{1}{2}(2^{50} + 1)
Show answer

Correct option: A

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