Stage: 5 Challenge Level: 
Tree diagrams. Real world. Conditional probability. Theoretical probability. Maths in STEM. Mathematical modelling. Combining probabilities. engineering. Individual. biology.
Published December 2000.
Copyright © 2007. University of Cambridge. All rights reserved.
NRICH is part of the family of activities in the Millennium Mathematics Project, which also includes the Plus and Motivate sites.
email: nrich@damtp.cam.ac.uk