Probability - AQA Tree diagrams. ... To work out the probabilities of each total outcome, multiply the probabilities together. Question. A bag contains 4 blue counters and 3 red counters.

To make a tree diagram for probability, branches need to be created with the probability on the branch and the outcome at the end of the branch. One needs to multiply continuously along the ...

Complete the tree diagram and work out the probability of selecting two red counters. Show answer Hide answer Use the fact that probabilities add up to 1 to work out the probabilities of the ...