TS ICET 24 May 2019 Shift 1 Paper

Question : 130 of 200

Marks: +1, -0

The coefficient of

x^{12}

in the expansion of
(x — 1)(x — 2)(x — 3)......(x —13) is

Solution:

Required coefficient

=-(1+2+3+.....+13)=-91

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