For r=0,1,2, ,10 r=0,1,2, ,10 let Ar, Br and Cr, denote, respectively, the coefficient of xr - Maths - Binomial Theorem

Question

For r=0,1,2, ,10 r=0,1,2, ,10 let Ar, Br and Cr, denote,
respectively, the coefficient of xr in the expansion of
(1+x)^10,(1+x)^20 and (1+x)^30 Then, Σ10r=1
Ar(B10Br−C10Ar) is equal to
Answer is (C10 - B10)

Neha Sethi · Accepted Answer

For r=0,1,2,...,10 r=0,1,2,...,10 let Ar, Br and Cr, denote, respectively, the coefficient of xr in the expansion of (1+x)^10,(1+x)^20 and (1+x)^30. Then, Σ10r=1 Ar(B10Br−C10Ar) is equal to. Answer is (C10 - B10)

For r=0,1,2,...,10 r=0,1,2,...,10 let Ar, Br and Cr, denote, respectively, the coefficient of xr in the expansion of (1+x)^10,(1+x)^20 and (1+x)^30. Then, Σ10r=1 Ar(B10Br−C10Ar) is equal to.
Answer is (C10 - B10)