Important Formulae

Binomial Theorem of Class 11

Important Formulae

(a) C_o+ C₁ + C₂ + …… + C_n = 2_n

(b) C_o + C₂ + C4 + ………. = C₁ + C₃ + C₅ + ………… = 2_n-1

(c) Co₂ + C₁₂ + C₂₂ + …….. + C_2n = 2_nC_n

(d) CoCr + C₁C_{r + 1}+ ….. + C_n-rC_n = 2_nC_n-r