Question 1156230
OB is 6/20*8/19
BO is 8/20*5/19  the total is 192/380=0.505

WW is 6/20(5/19)=15/190=0.0789

the complement of that is at least one marble is not white 0.9211.

If the first marble is orange the second is 5/19 the new sample space probability or 0.263