You should already be familiar with drawing probability tree diagrams for independent events but now I look at dependent events where the probability of one event depends on the probability of the previous event. I introduce you to new notation which I would encourage you to do as it will help with conditional probability at a later stage and help avoid common errors.

Dependent Events in Probability Tree Diagrams | ExamSolutions - maths problems answered - youtube Video

An example for you to try

Example to try on Dependent Events in Probability Tree Diagrams | ExamSolutions maths - youtube Video