Let Bt be a standard Brownian motion starting from 0. Define the stopping time
Tb = inf(t ≥ 0 : Bt = b). Find P(T1 < T-1 < T2 < T-2 < T3 < T-3) and P(T1 < T2 < T3 < T4 < T-1).
I am just beginning to do Brownian motions and don't know where to start. I know the properties of a Brownian motion but am confused by the way this problem is set up.