In a probability tree diagram, all branches originating from the same point must sum to [ ].
In a probability tree diagram, all branches originating from the same point must sum to 1.
Flashcards for OCR GCSE Maths Conditional Probability, covering the key formulae, methods and definitions you need to recall for the written papers. 20 cards, matched to the OCR GCSE Maths (J560) specification.