Math Chapter Wise Theory Of Equation And Inequations English MCQ DSSSB PGT 2021 Q.If xn –px2 +r = 0 is having equal roots, then relation between n, p and r is - Ann rn–2 = 4pn (n–2)n–2 Bnn rn–1 = 4p (n–2)n–1 Cnn rn = 4p (n–2)n Dnn–2 rn–1 = 4pn (n–2)n–2 Show answer Correct answer: nn rn–2 = 4pn (n–2)n–2