Math Chapter Wise question with answer

Q01 The harmonic mean of the roots of the equation ax2 + bx + c = 0 is- English · UPPSC GIC 2021 Q02 If X is a random variable with mean m, then the variance of x, denoted by Var (X) is given by English · DSSSB 23 SEP 2018 (9 AM-11 AM) Q03 Let p and q be the roots of the equation x² – 2x + A = 0 and let r and s be the roots of the equation x² – 10x + B... English · EMRS PGT-2023 Q04 α and β are the roots of the equation px² + qx + r = 0 (p ≠ 0). If p, q, r are in A.P. and 1/α + 1/β = 4, then the... English · EMRS PGT-2023 Q05 The maximum number of positive real roots of the equation 2x⁷ − x⁴ + 4x³ − 5 = 0 is: English · Bihar (TRE 1.0)-2023 Q06 Which of the following quadratic equations has two distinct real roots? English · KVS PGT 2023