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[" (3.) The coefficient of "x^(49)" in t...

[" (3.) The coefficient of "x^(49)" in the expansion of "(x-1)(x-(1)/(2))(x-(1)/(2^(2)))....(x-(1)/(2^(49)))" is equal to "],[[" (A) "-2(1-(1)/(2^(50)))," (B) +ve coefficient of "x],[" (C) -ve coefficient of "x," (D) "-2(1-(1)/(2^(49)))]]

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