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[" The coefficient of "x^(49)" in the ex...

[" The coefficient of "x^(49)" in the expansion of "(x-1)(x-(1)/(2))(x-(1)/(2^(2)))*(x-(1)/(2^(4)))" ise "],[[" (A) "-2(1-(1)/(2^(30)))," (B) + vecoefficient of "x],[" (C) - ve coefficient of "x," (D) "-2(1-(1)/(2^(49)))]]

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