A projectile is fixed on a horizontal ground. Coefficient of restitution between the projectile and the ground is ‘e’. If a, b and c be the ratio of time of flight $\left[\frac{{\mathrm{T}}_1}{{\mathrm{T}}_2}\right]$, maximum height $\left[\frac{{\mathrm{H}}_1}{{\mathrm{H}}_2}\right]$ and horizontal range $\left[\frac{{\mathrm{R}}_1}{{\mathrm{R}}_2}\right]$ in first two collisions with the ground, then