I need the two subsections developed in detail their procedures thanks

2. Let {X_n} be the result of results obtained by successively rolling a balanced die. Be

{F_n} the natural filtration of this process, define the variable as the first time n such that

X₁ + . . . + X_n 10. Determine if is a stop time with respect to the given leak.

3. Let be ₁ and ₂ two stop times with respect to the same leak. Show that ₁ + ₂ is also

stoppage time