Probability: apply the property that the probabilities of an exhaustive set of outcomes sum to one; apply the property that the probabilities of an exhaustive set of mutually exclusive events sum to one(Pearson Edexcel GCSE)

Mastery Mind: Mathematics Revision · Oct 20, 2026 · 5m

One missing probability can unlock a whole exam question: account for every possible outcome once, and the total is 1. Learn to find the remainder, interpret ‘not’, and solve algebraic probability tables while avoiding the overlap trap. This guide includes worked solutions, retrieval practice and a ten-minute female-narrated podcast. Listen to this audio revision guide for Probability: apply the property that the probabilities of an exhaustive set of outcomes sum to one; apply the property that the probabilities of an exhaustive set of mutually exclusive events sum to one. Test your knowledge…