Just need some help solving this question, the "at least 3" instead of "exactly 3" makes this difficult, I'm not sure where to start.
Assume there are 8 bags in front of you, all containing marbles of varying colours. The probability, per bag, of randomly picking a red marble, for bags #1 through #7 is 2%, while the probability of randomly picking a red marble in bag #8 is 1%. What is the chance you will pick at least 3 red marbles, if you're picking exactly one marble from each bag, randomly?