Math Chapter Wise Length Of Curve, Surface Area And Volume Of Solids Of Revolution English MCQ JDD-75-PGT TIER II-X-15 28.06.2015 Q.(m,n) β = A(m) (n) (mn) Γ + Γ Γ B(m) (n) (m n) Γ Γ Γ + C(m). (n) (m n) Γ Γ Γ − DNone of these Show answer Correct answer: (m) (n) (m n) Γ Γ Γ +