MathematicsMedium64×since 2002Q2995Let (1 + x + 2x²)²⁰ = a₀ + a₁x + a₂x² + .... + a₄₀x⁴⁰. Then a₁ + a₃ + a₅ + ..... + a₃₇ is equal toA2²⁰(2²⁰ −-− 21)B2¹⁹(2²⁰ −-− 21)C2¹⁹(2²⁰ +++ 21)D2²⁰(2²⁰ +++ 21)Check answerSkip