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Clavis TMUA Set C Paper 1 · Q2

Paper 1Algebra

Find the coefficient of x2x^2 in

(1+x)2+(1+x)3+(1+x)4+⋯+(1+x)10.(1+x)^2+(1+x)^3+(1+x)^4+\cdots+(1+x)^{10}.
A4545
B5555
C120120
D155155
E164164
F165165

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